OraclePlatform (EclipseLink 3.0.0, API Reference)

java.lang.Object
- org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
- - org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - - org.eclipse.persistence.platform.database.DatabasePlatform
    - - org.eclipse.persistence.platform.database.OraclePlatform

All Implemented Interfaces:

Serializable, Cloneable, org.eclipse.persistence.internal.core.databaseaccess.CorePlatform<org.eclipse.persistence.internal.helper.ConversionManager>, org.eclipse.persistence.internal.databaseaccess.Platform

Direct Known Subclasses:

Oracle8Platform, Oracle8Platform
```
public class OraclePlatform
extends DatabasePlatform
```
Purpose: Provides Oracle specific behavior.
Responsibilities:
- Native SQL for byte[], Date, Time, & Timestamp.
- Native sequencing named sequences.
- Native SQL/ROWNUM support for MaxRows and FirstResult filtering.
See Also:

Serialized Form

Since:

TOPLink/Java 1.0

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`END_FROM`
`protected String`	`END_FROM_ID`
`protected String`	`FROM`
`protected String`	`FROM_ID`
`protected String`	`HINT_END`
`protected String`	`HINT_START`
`protected String`	`LOCK_END`
`protected String`	`LOCK_START_PREFIX`
`protected String`	`LOCK_START_SUFFIX`
`protected String`	`MAX_ROW`
`protected String`	`MIN_ROW`
`protected String`	`ORDER_BY_ID`
`protected String`	`SELECT`
`protected String`	`SELECT_ID_PREFIX`
`protected String`	`SELECT_ID_SUFFIX`
`protected boolean`	`shouldPrintForUpdateClause` Whether a FOR UPDATE clause should be printed at the end of the query
`protected boolean`	`supportsIdentity` Advanced attribute indicating whether identity is supported, see comment to setSupportsIdentity method.
`protected static DataModifyQuery`	`vpdClearIdentifierQuery`
`protected static DataModifyQuery`	`vpdSetIdentifierQuery`

Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform
DEFAULT_VARCHAR_SIZE

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
batchWritingMechanism, castSizeForVarcharParameter, classTypes, cursorCode, DEFAULT_MAX_BATCH_WRITING_SIZE, DEFAULT_PARAMETERIZED_MAX_BATCH_WRITING_SIZE, driverName, driverSupportsNationalCharacterVarying, fieldTypes, IS_VALID_TIMEOUT, isCastRequired, maxBatchWritingSize, partitioningCallback, pingSQL, printInnerJoinInWhereClause, printOuterJoinInWhereClause, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldCreateIndicesOnForeignKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, storedProcedureTerminationToken, stringBindingSize, structConverters, supportsAutoCommit, tableCreationSuffix, transactionIsolation, typeConverters, useJDBCStoredProcedureSyntax, useNationalCharacterVarying, useRownumFiltering, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesStreamsForBinding, usesStringBinding

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
conversionManager, dataTypesConvertedFromAClass, dataTypesConvertedToAClass, defaultNativeSequenceToTable, defaultSeqenceAtNextValue, defaultSequence, endDelimiter, platformOperators, sequences, sequencesLock, startDelimiter, tableQualifier, timestampQuery

Constructor Summary

Constructors
Constructor and Description

OraclePlatform()

Constructors
Constructor and Description
`OraclePlatform()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`allowsSizeInProcedureArguments()` Used for stored procedure definitions.
`protected void`	`appendByteArray(byte[] bytes, Writer writer)` INTERNAL: If using native SQL then print a byte[] literally as a hex string otherwise use ODBC format as provided in DatabasePlatform.
`protected void`	`appendCalendar(Calendar calendar, Writer writer)` INTERNAL: Appends an Oracle specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendDate(Date date, Writer writer)` INTERNAL: Appends an Oracle specific date if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendTime(Time time, Writer writer)` INTERNAL: Appends an Oracle specific time if usesNativeSQL is true otherwise use the ODBC format.
`protected void`	`appendTimestamp(Timestamp timestamp, Writer writer)` INTERNAL: Appends an Oracle specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
`ExpressionOperator`	`atan2Operator()` INTERNAL: Build operator.
`org.eclipse.persistence.internal.databaseaccess.DatabaseCall`	`buildCallWithReturning(SQLCall sqlCall, Vector returnFields)` INTERNAL: Returns null unless the platform supports call with returning
`protected Hashtable`	`buildFieldTypes()` INTERNAL:
`protected String`	`buildFirstRowsHint(int max)` Build the hint string used for first rows.
`ValueReadQuery`	`buildSelectQueryForIdentity(String qualifiedSeqName, Integer size)` INTERNAL: Though Oracle doesn't support identity it could be imitated, see comment to setSupportsIdentity method.
`ValueReadQuery`	`buildSelectQueryForSequenceObject(String qualifiedSeqName, Integer size)` INTERNAL: Produce a DataReadQuery which updates(!) the sequence number in the db and returns it.
`boolean`	`canBuildCallWithReturning()` INTERNAL: Indicates whether the platform can build call with returning.
`boolean`	`canUnwrapOracleConnection()` INTERNAL: Indicates whether this Oracle platform can unwrap Oracle connection.
`boolean`	`checkTableExists(org.eclipse.persistence.internal.sessions.DatabaseSessionImpl session, TableDefinition table, boolean suppressLogging)` INTERNAL: Executes and evaluates query to check whether given table exists.
`void`	`clearOracleConnectionCache(Connection conn)` INTERNAL: Clears both implicit and explicit caches of OracleConnection on Oracle9Platform, noop here.
`Expression`	`createExpressionFor(org.eclipse.persistence.internal.helper.DatabaseField field, Expression builder)` INTERNAL: Override this method if the platform needs to use a custom function based on the DatabaseField
`protected ExpressionOperator`	`currentDateOperator()`
`protected ExpressionOperator`	`currentTimeOperator()`
`static ExpressionOperator`	`exceptOperator()` INTERNAL: Create the EXCEPT operator, MINUS in Oracle.
`String`	`getAssignmentString()` INTERNAL: Used for stored function calls.
`String`	`getBatchBeginString()` Used for batch writing and sp defs.
`String`	`getBatchEndString()` Used for batch writing and sp defs.
`String`	`getBatchRowCountAssignString()` Used for batch writing for row count return.
`String`	`getBatchRowCountDeclareString()` Used for batch writing for row count return.
`String`	`getBatchRowCountReturnString()` Used for batch writing for row count return.
`String`	`getDeclareBeginString()` INTERNAL: DECLARE stanza header for Anonymous PL/SQL block
`String`	`getDropCascadeString()` Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.
`String`	`getDropDatabaseSchemaString(String schema)` Return the drop schema definition.
`int`	`getINClauseLimit()` INTERNAL: Some database platforms have a limit for the number of parameters in an IN clause.
`int`	`getMaxFieldNameSize()` INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
`Vector`	`getNativeTableInfo(String table, String creator, org.eclipse.persistence.internal.sessions.AbstractSession session)` Return the catalog information through using the native SQL catalog selects.
`Object`	`getObjectFromResultSet(ResultSet resultSet, int columnNumber, int type, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Get a timestamp value from a result set.
`String`	`getProcedureArgument(String name, Object parameter, Integer parameterType, StoredProcedureCall call, org.eclipse.persistence.internal.sessions.AbstractSession session)` Obtain the platform specific argument string
`String`	`getProcedureCallHeader()` Used for sp calls.
`String`	`getProcedureCallTail()` Used for sp calls.
`String`	`getSelectForUpdateString()` Most database support a syntax.
`String`	`getSelectForUpdateWaitString(Integer waitTimeout)` Platforms that support the WAIT option should override this method.
`String`	`getStoredProcedureParameterPrefix()`
`ValueReadQuery`	`getSystemChangeNumberQuery()` PUBLIC: The query to select the current system change number from Oracle.
`protected DataReadQuery`	`getTableExistsQuery(TableDefinition table)` INTERNAL: Returns query to check whether given table exists.
`ValueReadQuery`	`getTimestampQuery()` PUBLIC: This method returns the query to select the timestamp from the server for Oracle.
`DatabaseQuery`	`getVPDClearIdentifierQuery(String vpdIdentifier)` INTERNAL: Return an Oracle defined VPD clear identifier query.
`String`	`getVPDCreationFunctionString(String tableName, String tenantFieldName)` INTERNAL: Return an Oracle defined VPD identifier function.
`String`	`getVPDCreationPolicyString(String tableName, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Return an Oracle defined VPD identifier policy.
`String`	`getVPDDeletionString(String tableName, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Return an Oracle defined VPD identifier policy deletion.
`DatabaseQuery`	`getVPDSetIdentifierQuery(String vpdIdentifier)` INTERNAL: Return an Oracle defined VPD set identifier query.
`void`	`initializeConnectionData(Connection connection)` INTERNAL: Allow initialization from the connection.
`protected void`	`initializePlatformOperators()` Initialize any platform-specific operators
`boolean`	`isAlterSequenceObjectSupported()` INTERNAL: Override this method if the platform supports sequence objects and it's possible to alter sequence object's increment in the database.
`boolean`	`isForUpdateCompatibleWithDistinct()` INTERNAL: Indicates whether SELECT DISTINCT ...
`boolean`	`isLobCompatibleWithDistinct()` INTERNAL: Indicates whether SELECT DISTINCT lob FROM ...
`boolean`	`isLockTimeoutException(DatabaseException e)` Return true if the given exception occurred as a result of a lock time out exception (WAIT clause).
`boolean`	`isNativeConnectionRequiredForLobLocator()` INTERNAL: Used by derived platforms (Oracle8Platform and higher) to indicate whether app.
`boolean`	`isOracle()`
`boolean`	`isRowCountOutputParameterRequired()` Oracle does not return the row count from PLSQL anon blocks, so an output parameter is required for this.
`protected ExpressionOperator`	`logOperator()` Create the log operator for this platform
`Hashtable`	`maximumNumericValues()` Builds a table of maximum numeric values keyed on java class.
`Hashtable`	`minimumNumericValues()` Builds a table of minimum numeric values keyed on java class.
`protected ExpressionOperator`	`operatorLocate()` INTERNAL: Override the default locate operator
`protected ExpressionOperator`	`operatorLocate2()` INTERNAL: Override the default locate operator
`protected ExpressionOperator`	`operatorOuterJoin()` Create the outer join operator for this platform
`void`	`printFieldNullClause(Writer writer)` INTERNAL: Append the receiver's field 'NULL' constraint clause to a writer.
`void`	`printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call, org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer, org.eclipse.persistence.internal.expressions.SQLSelectStatement statement)` INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall.
`static ExpressionOperator`	`regexpOperator()` INTERNAL: Create the REGEXP_LIKE operator.
`String`	`serverTimestampString()` Return the current date and time from the server.
`void`	`setSupportsIdentity(boolean supportsIdentity)` ADVANCED: Oracle db doesn't support identity.
`boolean`	`shouldPrintForUpdateClause()`
`boolean`	`shouldPrintStoredProcedureArgumentNameInCall()` INTERNAL: Should the variable name of a stored procedure call be printed as part of the procedure call e.g.
`boolean`	`shouldUseJDBCOuterJoinSyntax()` JDBC defines and outer join syntax, many drivers do not support this.
`boolean`	`supportsAutoConversionToNumericForArithmeticOperations()` Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ...
`boolean`	`supportsIdentity()` INTERNAL: Indicates whether the platform supports identity.
`boolean`	`supportsSelectForUpdateNoWait()` Returns true if the database supports SQL syntax not to wait on a SELECT..FOR UPADTE (i.e.
`boolean`	`supportsSequenceObjects()` INTERNAL: Indicates whether the platform supports sequence objects.
`boolean`	`supportsStoredFunctions()` INTERNAL: Return if database stored functions are supported.
`boolean`	`supportsVPD()` Oracle db supports VPD.
`boolean`	`supportsWaitForUpdate()` INTERNAL: Indicates whether the platform supports timeouts on For Update
`protected ExpressionOperator`	`todayOperator()` Create the sysdate operator for this platform
`Connection`	`unwrapOracleConnection(Connection connection)` INTERNAL: If can unwrap returns unwrapped Oracle connection, otherwise original connection.
`boolean`	`useJDBCStoredProcedureSyntax()` Return true if JDBC syntax should be used for stored procedure calls.
`boolean`	`wasFailureCommunicationBased(SQLException exception, Connection connection, org.eclipse.persistence.internal.sessions.AbstractSession sessionForProfile)` INTERNAL: A call to this method will perform a platform based check on the connection and exception error code to determine if the connection is still valid or if a communication error has occurred.

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
addBatch, addStructConverter, appendBoolean, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildClassTypes, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, copyInto, createArray, createArray, createPlatformDefaultSequence, createStruct, createStruct, dontBindUpdateAllQueryUsingTempTables, executeBatch, executeStoredProcedure, freeTemporaryObject, getBatchDelimiterString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlPrefix, getCreateTempTableSqlSuffix, getCreateViewString, getCreationInOutputProcedureToken, getCreationOutputProcedureToken, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIndexNamePrefix, getInOutputProcedureToken, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getOutputProcedureToken, getParameterValueFromDatabaseCall, getParameterValueFromDatabaseCall, getPartitioningCallback, getPingSQL, getProcedureArgumentString, getProcedureAsString, getProcedureBeginString, getProcedureEndString, getProcedureOptionList, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateNoWaitString, getSelectForUpdateOfString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTempTableForTable, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, getUseNationalCharacterVaryingTypeForString, hasPartitioningCallback, initialize, isCastRequired, isDynamicSQLRequiredForFunctions, isInformixOuterJoin, isJDBCExecuteCompliant, isNullAllowedInSelectClause, isOutputAllowWithResultSet, isXDBDocument, minimumTimeIncrement, prepareBatchStatement, printFieldIdentityClause, printFieldNotNullClause, printFieldTypeSize, printFieldTypeSize, printFieldUnique, printFieldUnique, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, registerOutputParameter, registerOutputParameter, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresProcedureCallBrackets, requiresProcedureCallOuputToken, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setDriverName, setDriverSupportsNVarChar, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setNullFromDatabaseField, setNullFromDatabaseField, setParameterValueInDatabaseCall, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, setShouldForceBindAllParameters, setShouldForceFieldNamesToUpperCase, setShouldIgnoreCaseOnFieldComparisons, setShouldOptimizeDataConversion, setShouldTrimStrings, setShouldUseRownumFiltering, setStatementCacheSize, setStoredProcedureTerminationToken, setStringBindingSize, setSupportsAutoCommit, setTableCreationSuffix, setTransactionIsolation, setUseJDBCStoredProcedureSyntax, setUseNationalCharacterVaryingTypeForString, setUsesBatchWriting, setUsesByteArrayBinding, setUsesJDBCBatchWriting, setUsesNativeBatchWriting, setUsesNativeSQL, setUsesStreamsForBinding, setUsesStringBinding, shouldAlwaysUseTempStorageForModifyAll, shouldBindAllParameters, shouldBindLiterals, shouldCacheAllStatements, shouldCreateIndicesForPrimaryKeys, shouldCreateIndicesOnForeignKeys, shouldCreateIndicesOnUniqueKeys, shouldForceBindAllParameters, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintInnerJoinInWhereClause, shouldPrintInOutputTokenBeforeType, shouldPrintInputTokenAtStart, shouldPrintLockingClauseAfterWhereClause, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintOutputTokenBeforeType, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsConnectionUserName, supportsCountDistinctWithMultipleFields, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsGlobalTempTables, supportsIndexes, supportsIndividualTableLocking, supportsLocalTempTables, supportsLockingQueriesWithMultipleTables, supportsNestingOuterJoins, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, writeAddColumnClause, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeLOB, writeParameterMarker, writeTableCreationSuffix, writeUpdateOriginalFromTempTableSql

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
addOperator, addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, clone, convertObject, createConnectionCustomizer, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSeqenceAtNextValue, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, initIdentitySequences, isAccess, isAttunity, isCloudscape, isDB2, isDB2Z, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle12, isOracle9, isPervasive, isPointBase, isPostgreSQL, isSQLAnywhere, isSQLServer, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, removeIdentitySequences, removeSequence, sequencesAfterCloneCleanup, setConversionManager, setDefaultNativeSequenceToTable, setDefaultSeqenceAtNextValue, setDefaultSequence, setEndDelimiter, setSelectSequenceNumberQuery, setSequencePreallocationSize, setSequences, setStartDelimiter, setTableQualifier, setTimestampQuery, setUpdateSequenceQuery, shouldNativeSequenceUseTransaction, shouldPrepare, shouldSelectDistinctIncludeOrderBy, shouldSelectIncludeOrderBy, supportsNativeSequenceNumbers, toString, usesPlatformDefaultSequence

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - vpdSetIdentifierQuery
```
protected static DataModifyQuery vpdSetIdentifierQuery
```
  - vpdClearIdentifierQuery
```
protected static DataModifyQuery vpdClearIdentifierQuery
```
  - shouldPrintForUpdateClause
```
protected boolean shouldPrintForUpdateClause
```
    Whether a FOR UPDATE clause should be printed at the end of the query
  - supportsIdentity
```
protected boolean supportsIdentity
```
    Advanced attribute indicating whether identity is supported, see comment to setSupportsIdentity method.
  - SELECT
```
protected String SELECT
```
  - HINT_START
```
protected String HINT_START
```
  - HINT_END
```
protected String HINT_END
```
  - FROM
```
protected String FROM
```
  - END_FROM
```
protected String END_FROM
```
  - MAX_ROW
```
protected String MAX_ROW
```
  - MIN_ROW
```
protected String MIN_ROW
```
  - LOCK_START_PREFIX
```
protected String LOCK_START_PREFIX
```
  - LOCK_START_SUFFIX
```
protected String LOCK_START_SUFFIX
```
  - LOCK_END
```
protected String LOCK_END
```
  - SELECT_ID_PREFIX
```
protected String SELECT_ID_PREFIX
```
  - SELECT_ID_SUFFIX
```
protected String SELECT_ID_SUFFIX
```
  - FROM_ID
```
protected String FROM_ID
```
  - END_FROM_ID
```
protected String END_FROM_ID
```
  - ORDER_BY_ID
```
protected String ORDER_BY_ID
```
- Constructor Detail
  - OraclePlatform
```
public OraclePlatform()
```
- Method Detail
  - initializeConnectionData
```
public void initializeConnectionData(Connection connection)
                              throws SQLException
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    INTERNAL: Allow initialization from the connection.
    
    Overrides:
    
    initializeConnectionData in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    SQLException
  - allowsSizeInProcedureArguments
```
public boolean allowsSizeInProcedureArguments()
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Used for stored procedure definitions.
    
    Overrides:
    
    allowsSizeInProcedureArguments in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - appendByteArray
```
protected void appendByteArray(byte[] bytes,
                               Writer writer)
                        throws IOException
```
    INTERNAL: If using native SQL then print a byte[] literally as a hex string otherwise use ODBC format as provided in DatabasePlatform.
    
    Overrides:
    
    appendByteArray in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    IOException
  - appendDate
```
protected void appendDate(Date date,
                          Writer writer)
                   throws IOException
```
    INTERNAL: Appends an Oracle specific date if usesNativeSQL is true otherwise use the ODBC format. Native FORMAT: to_date('1997-11-06','yyyy-mm-dd')
    
    Overrides:
    
    appendDate in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    IOException
  - appendTime
```
protected void appendTime(Time time,
                          Writer writer)
                   throws IOException
```
    INTERNAL: Appends an Oracle specific time if usesNativeSQL is true otherwise use the ODBC format. Native FORMAT: to_date(#####, 'sssss').
    
    Overrides:
    
    appendTime in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    IOException
  - appendTimestamp
```
protected void appendTimestamp(Timestamp timestamp,
                               Writer writer)
                        throws IOException
```
    INTERNAL: Appends an Oracle specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format. Native Format: to_date ('1997-11-06 10:35:45.0' , 'yyyy-mm-dd hh:mm:ss.n')
    
    Overrides:
    
    appendTimestamp in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    IOException
  - appendCalendar
```
protected void appendCalendar(Calendar calendar,
                              Writer writer)
                       throws IOException
```
    INTERNAL: Appends an Oracle specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format. Native Format: to_date ('1997-11-06 10:35:45.0' , 'yyyy-mm-dd hh:mm:ss.n')
    
    Overrides:
    
    appendCalendar in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    IOException
  - atan2Operator
```
public ExpressionOperator atan2Operator()
```
    INTERNAL: Build operator.
  - buildFieldTypes
```
protected Hashtable buildFieldTypes()
```
    INTERNAL:
    
    Overrides:
    
    buildFieldTypes in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - buildFirstRowsHint
```
protected String buildFirstRowsHint(int max)
```
    Build the hint string used for first rows. Allows it to be overridden
    
    Parameters:
    
    max -
    
    Returns:
  - buildCallWithReturning
```
public org.eclipse.persistence.internal.databaseaccess.DatabaseCall buildCallWithReturning(SQLCall sqlCall,
                                                                                           Vector returnFields)
```
    INTERNAL: Returns null unless the platform supports call with returning
    
    Overrides:
    
    buildCallWithReturning in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - canBuildCallWithReturning
```
public boolean canBuildCallWithReturning()
```
    INTERNAL: Indicates whether the platform can build call with returning. In case this method returns true, buildCallWithReturning method may be called.
    
    Overrides:
    
    canBuildCallWithReturning in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - clearOracleConnectionCache
```
public void clearOracleConnectionCache(Connection conn)
```
    INTERNAL: Clears both implicit and explicit caches of OracleConnection on Oracle9Platform, noop here.
  - getAssignmentString
```
public String getAssignmentString()
```
    INTERNAL: Used for stored function calls.
    
    Overrides:
    
    getAssignmentString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDeclareBeginString
```
public String getDeclareBeginString()
```
    INTERNAL: DECLARE stanza header for Anonymous PL/SQL block
  - getBatchBeginString
```
public String getBatchBeginString()
```
    Used for batch writing and sp defs.
    
    Overrides:
    
    getBatchBeginString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchEndString
```
public String getBatchEndString()
```
    Used for batch writing and sp defs.
    
    Overrides:
    
    getBatchEndString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountDeclareString
```
public String getBatchRowCountDeclareString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountDeclareString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isRowCountOutputParameterRequired
```
public boolean isRowCountOutputParameterRequired()
```
    Oracle does not return the row count from PLSQL anon blocks, so an output parameter is required for this.
    
    Overrides:
    
    isRowCountOutputParameterRequired in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountReturnString
```
public String getBatchRowCountReturnString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountReturnString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDropDatabaseSchemaString
```
public String getDropDatabaseSchemaString(String schema)
```
    Return the drop schema definition. Subclasses should override as needed.
    
    Overrides:
    
    getDropDatabaseSchemaString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getBatchRowCountAssignString
```
public String getBatchRowCountAssignString()
```
    Used for batch writing for row count return.
    
    Overrides:
    
    getBatchRowCountAssignString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getMaxFieldNameSize
```
public int getMaxFieldNameSize()
```
    INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
    
    Overrides:
    
    getMaxFieldNameSize in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getNativeTableInfo
```
public Vector getNativeTableInfo(String table,
                                 String creator,
                                 org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    Return the catalog information through using the native SQL catalog selects. This is required because many JDBC driver do not support meta-data. Willcards can be passed as arguments.
  - getProcedureCallHeader
```
public String getProcedureCallHeader()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureCallHeader in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getProcedureCallTail
```
public String getProcedureCallTail()
```
    Used for sp calls.
    
    Overrides:
    
    getProcedureCallTail in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getDropCascadeString
```
public String getDropCascadeString()
```
    Allows DROP TABLE to cascade dropping of any dependent constraints if the database supports this option.
    
    Overrides:
    
    getDropCascadeString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSelectForUpdateString
```
public String getSelectForUpdateString()
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Most database support a syntax. although don't actually lock the row. Some require the OF some don't like it.
    
    Overrides:
    
    getSelectForUpdateString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSelectForUpdateWaitString
```
public String getSelectForUpdateWaitString(Integer waitTimeout)
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Platforms that support the WAIT option should override this method. By default the wait timeout is ignored.
    
    Overrides:
    
    getSelectForUpdateWaitString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    See Also:
    
    DatabasePlatform.supportsWaitForUpdate()
  - getStoredProcedureParameterPrefix
```
public String getStoredProcedureParameterPrefix()
```
    Overrides:
    
    getStoredProcedureParameterPrefix in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getSystemChangeNumberQuery
```
public ValueReadQuery getSystemChangeNumberQuery()
```
    PUBLIC: The query to select the current system change number from Oracle. In order to execute this query a database administrator may need to grant execute permission on pl/sql package DBMS_FLASHBACK.
  - getTimestampQuery
```
public ValueReadQuery getTimestampQuery()
```
    PUBLIC: This method returns the query to select the timestamp from the server for Oracle.
    
    Specified by:
    
    getTimestampQuery in interface org.eclipse.persistence.internal.databaseaccess.Platform
    
    Overrides:
    
    getTimestampQuery in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - getVPDClearIdentifierQuery
```
public DatabaseQuery getVPDClearIdentifierQuery(String vpdIdentifier)
```
    INTERNAL: Return an Oracle defined VPD clear identifier query.
    
    Overrides:
    
    getVPDClearIdentifierQuery in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDCreationFunctionString
```
public String getVPDCreationFunctionString(String tableName,
                                           String tenantFieldName)
```
    INTERNAL: Return an Oracle defined VPD identifier function. Used for DDL generation.
    
    Overrides:
    
    getVPDCreationFunctionString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDCreationPolicyString
```
public String getVPDCreationPolicyString(String tableName,
                                         org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    INTERNAL: Return an Oracle defined VPD identifier policy. Used for DDL generation.
    
    Overrides:
    
    getVPDCreationPolicyString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDDeletionString
```
public String getVPDDeletionString(String tableName,
                                   org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    INTERNAL: Return an Oracle defined VPD identifier policy deletion. Used for DDL generation.
    
    Overrides:
    
    getVPDDeletionString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getVPDSetIdentifierQuery
```
public DatabaseQuery getVPDSetIdentifierQuery(String vpdIdentifier)
```
    INTERNAL: Return an Oracle defined VPD set identifier query.
    
    Overrides:
    
    getVPDSetIdentifierQuery in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getObjectFromResultSet
```
public Object getObjectFromResultSet(ResultSet resultSet,
                                     int columnNumber,
                                     int type,
                                     org.eclipse.persistence.internal.sessions.AbstractSession session)
                              throws SQLException
```
    INTERNAL: Get a timestamp value from a result set. Overrides the default behavior to specifically return a timestamp. Added to overcome an issue with the oracle 9.0.1.4 JDBC driver.
    
    Overrides:
    
    getObjectFromResultSet in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    SQLException
    
    See Also:
    
    "org.eclipse.persistence.platform.database.oracle.Oracle9Plaform"
  - initializePlatformOperators
```
protected void initializePlatformOperators()
```
    Initialize any platform-specific operators
    
    Overrides:
    
    initializePlatformOperators in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - exceptOperator
```
public static ExpressionOperator exceptOperator()
```
    INTERNAL: Create the EXCEPT operator, MINUS in Oracle.
  - regexpOperator
```
public static ExpressionOperator regexpOperator()
```
    INTERNAL: Create the REGEXP_LIKE operator.
  - isNativeConnectionRequiredForLobLocator
```
public boolean isNativeConnectionRequiredForLobLocator()
```
    INTERNAL: Used by derived platforms (Oracle8Platform and higher) to indicate whether app. server should unwrap connection to use lob locator.
  - isOracle
```
public boolean isOracle()
```
    Specified by:
    
    isOracle in interface org.eclipse.persistence.internal.databaseaccess.Platform
    
    Overrides:
    
    isOracle in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - logOperator
```
protected ExpressionOperator logOperator()
```
    Create the log operator for this platform
  - maximumNumericValues
```
public Hashtable maximumNumericValues()
```
    Builds a table of maximum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.
    NOTE: BigInteger & BigDecimal maximums are dependent upon their precision & Scale
    
    Overrides:
    
    maximumNumericValues in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - minimumNumericValues
```
public Hashtable minimumNumericValues()
```
    Builds a table of minimum numeric values keyed on java class. This is used for type testing but might also be useful to end users attempting to sanitize values.
    NOTE: BigInteger & BigDecimal minimums are dependent upon their precision & Scale
    
    Overrides:
    
    minimumNumericValues in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - buildSelectQueryForSequenceObject
```
public ValueReadQuery buildSelectQueryForSequenceObject(String qualifiedSeqName,
                                                        Integer size)
```
    INTERNAL: Produce a DataReadQuery which updates(!) the sequence number in the db and returns it. Currently implemented on Oracle only.
    
    Overrides:
    
    buildSelectQueryForSequenceObject in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    Parameters:
    
    qualifiedSeqName - known by Oracle to be a defined sequence
  - buildSelectQueryForIdentity
```
public ValueReadQuery buildSelectQueryForIdentity(String qualifiedSeqName,
                                                  Integer size)
```
    INTERNAL: Though Oracle doesn't support identity it could be imitated, see comment to setSupportsIdentity method.
    
    Overrides:
    
    buildSelectQueryForIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    Parameters:
    
    qualifiedSeqName - known by Oracle to be a defined sequence
  - operatorOuterJoin
```
protected ExpressionOperator operatorOuterJoin()
```
    Create the outer join operator for this platform
  - operatorLocate
```
protected ExpressionOperator operatorLocate()
```
    INTERNAL: Override the default locate operator
  - operatorLocate2
```
protected ExpressionOperator operatorLocate2()
```
    INTERNAL: Override the default locate operator
  - printFieldNullClause
```
public void printFieldNullClause(Writer writer)
                          throws ValidationException
```
    INTERNAL: Append the receiver's field 'NULL' constraint clause to a writer.
    
    Overrides:
    
    printFieldNullClause in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Throws:
    
    ValidationException
  - serverTimestampString
```
public String serverTimestampString()
```
    Return the current date and time from the server.
  - shouldPrintStoredProcedureArgumentNameInCall
```
public boolean shouldPrintStoredProcedureArgumentNameInCall()
```
    INTERNAL: Should the variable name of a stored procedure call be printed as part of the procedure call e.g. EXECUTE PROCEDURE MyStoredProc(myvariable = ?)
    
    Overrides:
    
    shouldPrintStoredProcedureArgumentNameInCall in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - getProcedureArgument
```
public String getProcedureArgument(String name,
                                   Object parameter,
                                   Integer parameterType,
                                   StoredProcedureCall call,
                                   org.eclipse.persistence.internal.sessions.AbstractSession session)
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Obtain the platform specific argument string
    
    Overrides:
    
    getProcedureArgument in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - shouldUseJDBCOuterJoinSyntax
```
public boolean shouldUseJDBCOuterJoinSyntax()
```
    JDBC defines and outer join syntax, many drivers do not support this. So we normally avoid it.
    
    Overrides:
    
    shouldUseJDBCOuterJoinSyntax in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsAutoConversionToNumericForArithmeticOperations
```
public boolean supportsAutoConversionToNumericForArithmeticOperations()
```
    Some db allow VARCHAR db field to be used in arithmetic operations automatically converting them to numeric: UPDATE OL_PHONE SET PHONE_ORDER_VARCHAR = (PHONE_ORDER_VARCHAR + 1) WHERE ... SELECT ... WHERE ... t0.MANAGED_ORDER_VARCHAR BETWEEN 1 AND 4 ...
    
    Overrides:
    
    supportsAutoConversionToNumericForArithmeticOperations in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsSequenceObjects
```
public boolean supportsSequenceObjects()
```
    INTERNAL: Indicates whether the platform supports sequence objects. This method is to be used *ONLY* by sequencing classes
    
    Overrides:
    
    supportsSequenceObjects in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - supportsIdentity
```
public boolean supportsIdentity()
```
    INTERNAL: Indicates whether the platform supports identity. This method is to be used *ONLY* by sequencing classes
    
    Overrides:
    
    supportsIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
  - setSupportsIdentity
```
public void setSupportsIdentity(boolean supportsIdentity)
```
    ADVANCED: Oracle db doesn't support identity. However it's possible to get identity-like behavior using sequence in an insert trigger - that's the only case when supportsIdentity should be set to true: in this case all the sequences that have shouldAcquireValueAfterInsert set to true will keep this setting (it would've been reversed in case identity is not supported). Note that with supportsIdentity==true attempt to create tables that have identity fields will fail - Oracle doesn't support identity. Therefore if there's table creation reqiured it should be done with supportsIdentity==false, then set the flag to true and reset sequencing (or logout and login the session).
  - supportsStoredFunctions
```
public boolean supportsStoredFunctions()
```
    INTERNAL: Return if database stored functions are supported.
    
    Overrides:
    
    supportsStoredFunctions in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsVPD
```
public boolean supportsVPD()
```
    Oracle db supports VPD.
    
    Overrides:
    
    supportsVPD in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - supportsWaitForUpdate
```
public boolean supportsWaitForUpdate()
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    INTERNAL: Indicates whether the platform supports timeouts on For Update
    
    Overrides:
    
    supportsWaitForUpdate in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    See Also:
    
    DatabasePlatform.getSelectForUpdateWaitString(Integer waitTimeout)
  - supportsSelectForUpdateNoWait
```
public boolean supportsSelectForUpdateNoWait()
```
    Returns true if the database supports SQL syntax not to wait on a SELECT..FOR UPADTE (i.e. In Oracle adding NOWAIT to the end will accomplish this)
  - todayOperator
```
protected ExpressionOperator todayOperator()
```
    Create the sysdate operator for this platform
  - currentDateOperator
```
protected ExpressionOperator currentDateOperator()
```
  - currentTimeOperator
```
protected ExpressionOperator currentTimeOperator()
```
  - canUnwrapOracleConnection
```
public boolean canUnwrapOracleConnection()
```
    INTERNAL: Indicates whether this Oracle platform can unwrap Oracle connection.
  - unwrapOracleConnection
```
public Connection unwrapOracleConnection(Connection connection)
```
    INTERNAL: If can unwrap returns unwrapped Oracle connection, otherwise original connection.
  - useJDBCStoredProcedureSyntax
```
public boolean useJDBCStoredProcedureSyntax()
```
    Return true if JDBC syntax should be used for stored procedure calls.
  - printSQLSelectStatement
```
public void printSQLSelectStatement(org.eclipse.persistence.internal.databaseaccess.DatabaseCall call,
                                    org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter printer,
                                    org.eclipse.persistence.internal.expressions.SQLSelectStatement statement)
```
    INTERNAL: Print the SQL representation of the statement on a stream, storing the fields in the DatabaseCall. This implementation works MaxRows and FirstResult into the SQL using Oracle's ROWNUM to filter values if shouldUseRownumFiltering is true.
    
    Overrides:
    
    printSQLSelectStatement in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isAlterSequenceObjectSupported
```
public boolean isAlterSequenceObjectSupported()
```
    INTERNAL: Override this method if the platform supports sequence objects and it's possible to alter sequence object's increment in the database.
    
    Overrides:
    
    isAlterSequenceObjectSupported in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isForUpdateCompatibleWithDistinct
```
public boolean isForUpdateCompatibleWithDistinct()
```
    INTERNAL: Indicates whether SELECT DISTINCT ... FOR UPDATE is allowed by the platform (Oracle doesn't allow this).
    
    Overrides:
    
    isForUpdateCompatibleWithDistinct in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isLobCompatibleWithDistinct
```
public boolean isLobCompatibleWithDistinct()
```
    INTERNAL: Indicates whether SELECT DISTINCT lob FROM ... (where lob is BLOB or CLOB) is allowed by the platform (Oracle doesn't allow this).
    
    Overrides:
    
    isLobCompatibleWithDistinct in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - isLockTimeoutException
```
public boolean isLockTimeoutException(DatabaseException e)
```
    Return true if the given exception occurred as a result of a lock time out exception (WAIT clause).
    
    Overrides:
    
    isLockTimeoutException in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    See Also:
    
    OraclePlatform
  - wasFailureCommunicationBased
```
public boolean wasFailureCommunicationBased(SQLException exception,
                                            Connection connection,
                                            org.eclipse.persistence.internal.sessions.AbstractSession sessionForProfile)
```
    INTERNAL: A call to this method will perform a platform based check on the connection and exception error code to determine if the connection is still valid or if a communication error has occurred. If a communication error has occurred then the query may be retried. If this platform is unable to determine if the error was communication based it will return false forcing the error to be thrown to the user.
    
    Overrides:
    
    wasFailureCommunicationBased in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - shouldPrintForUpdateClause
```
public boolean shouldPrintForUpdateClause()
```
    Overrides:
    
    shouldPrintForUpdateClause in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
  - createExpressionFor
```
public Expression createExpressionFor(org.eclipse.persistence.internal.helper.DatabaseField field,
                                      Expression builder)
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    INTERNAL: Override this method if the platform needs to use a custom function based on the DatabaseField
    
    Overrides:
    
    createExpressionFor in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    Returns:
    
    An expression for the given field set equal to a parameter matching the field
  - getTableExistsQuery
```
protected DataReadQuery getTableExistsQuery(TableDefinition table)
```
    INTERNAL: Returns query to check whether given table exists. Query execution returns a row when table exists or empty result otherwise.
    
    Overrides:
    
    getTableExistsQuery in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Parameters:
    
    table - database table meta-data
    
    Returns:
    
    query to check whether given table exists
  - checkTableExists
```
public boolean checkTableExists(org.eclipse.persistence.internal.sessions.DatabaseSessionImpl session,
                                TableDefinition table,
                                boolean suppressLogging)
```
    INTERNAL: Executes and evaluates query to check whether given table exists. Returned value depends on returned result set being empty or not.
    
    Overrides:
    
    checkTableExists in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform
    
    Parameters:
    
    session - current database session
    
    table - database table meta-data
    
    suppressLogging - whether to suppress logging during query execution
    
    Returns:
    
    value of true if given table exists or false otherwise
  - getINClauseLimit
```
public int getINClauseLimit()
```
    Description copied from class: org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform
    
    INTERNAL: Some database platforms have a limit for the number of parameters in an IN clause.
    
    Overrides:
    
    getINClauseLimit in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Class OraclePlatform

Field Summary

Fields inherited from class org.eclipse.persistence.platform.database.DatabasePlatform

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Fields inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Constructor Summary

Method Summary

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Methods inherited from class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Methods inherited from class java.lang.Object

Field Detail

vpdSetIdentifierQuery

vpdClearIdentifierQuery

shouldPrintForUpdateClause

supportsIdentity

SELECT

HINT_START

HINT_END

FROM

END_FROM

MAX_ROW

MIN_ROW

LOCK_START_PREFIX

LOCK_START_SUFFIX

LOCK_END

SELECT_ID_PREFIX

SELECT_ID_SUFFIX

FROM_ID

END_FROM_ID

ORDER_BY_ID

Constructor Detail

OraclePlatform

Method Detail

initializeConnectionData

allowsSizeInProcedureArguments

appendByteArray

appendDate

appendTime

appendTimestamp

appendCalendar

atan2Operator

buildFieldTypes

buildFirstRowsHint

buildCallWithReturning

canBuildCallWithReturning

clearOracleConnectionCache

getAssignmentString

getDeclareBeginString

getBatchBeginString

getBatchEndString

getBatchRowCountDeclareString

isRowCountOutputParameterRequired

getBatchRowCountReturnString

getDropDatabaseSchemaString

getBatchRowCountAssignString

getMaxFieldNameSize

getNativeTableInfo

getProcedureCallHeader

getProcedureCallTail

getDropCascadeString

getSelectForUpdateString

getSelectForUpdateWaitString

getStoredProcedureParameterPrefix

getSystemChangeNumberQuery

getTimestampQuery

getVPDClearIdentifierQuery

getVPDCreationFunctionString

getVPDCreationPolicyString

getVPDDeletionString

getVPDSetIdentifierQuery

getObjectFromResultSet

initializePlatformOperators

exceptOperator

regexpOperator

isNativeConnectionRequiredForLobLocator

isOracle

logOperator

maximumNumericValues

minimumNumericValues

buildSelectQueryForSequenceObject