org.eclipse.persistence.platform.database

Class SQLServerPlatform

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.SQLServerPlatform

All Implemented Interfaces:

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

public class SQLServerPlatform
extends DatabasePlatform

Purpose: Provides SQL Server specific behavior.

Responsibilities:

• Native SQL for byte[], Date, Time, & Timestamp.
• Native sequencing using @@IDENTITY.

See Also:

Serialized Form

Since:

TOPLink/Java 1.0

Field Summary

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, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldOptimizeDataConversion, shouldTrimStrings, statementCacheSize, storedProcedureTerminationToken, stringBindingSize, structConverters, supportsAutoCommit, tableCreationSuffix, transactionIsolation, typeConverters, Types_NCLOB, Types_SQLXML, 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
SQLServerPlatform()

Method Summary

Modifier and Type	Method and Description
protected void	appendByteArray(byte[] bytes, java.io.Writer writer) If using native SQL then print a byte[] as '0xFF...'
protected void	appendCalendar(java.util.Calendar calendar, java.io.Writer writer) Answer a platform correct string representation of a Calendar, suitable for SQL generation.
protected void	appendDate(java.sql.Date date, java.io.Writer writer) Answer a platform correct string representation of a Date, suitable for SQL generation.
protected void	appendSybaseCalendar(java.util.Calendar calendar, java.io.Writer writer) Write a timestamp in Sybase specific format ( yyyy-mm-dd-hh.mm.ss.fff)
protected void	appendSybaseTimestamp(java.sql.Timestamp timestamp, java.io.Writer writer) Write a timestamp in Sybase specific format ( yyyy-mm-dd-hh.mm.ss.fff)
protected void	appendTime(java.sql.Time time, java.io.Writer writer) Answer a platform correct string representation of a Time, suitable for SQL generation.
protected void	appendTimestamp(java.sql.Timestamp timestamp, java.io.Writer writer) Answer a platform correct string representation of a Timestamp, suitable for SQL generation.
protected java.util.Hashtable	buildFieldTypes()
ValueReadQuery	buildSelectQueryForIdentity() INTERNAL: Build the identity query for native sequencing.
ValueReadQuery	buildSelectQueryForSequenceObject(java.lang.String qualifiedSeqName, java.lang.Integer size) INTERNAL: Produce a DataReadQuery which updates(!)
boolean	dontBindUpdateAllQueryUsingTempTables() INTERNAL: In SQLServer local temporary table created by one PreparedStatement can't be used in another PreparedStatement.
static ExpressionOperator	extractOperator() INTERNAL: Derby does not support EXTRACT, but does have DATEPART.
java.lang.String	getBatchDelimiterString() Used for batch writing and sp defs.
protected java.lang.String	getCreateTempTableSqlPrefix() INTERNAL:
java.lang.String	getCreationInOutputProcedureToken() This method is used to print the required output parameter token for the specific platform.
java.lang.String	getCreationOutputProcedureToken() This method is used to print the required output parameter token for the specific platform.
java.lang.String	getInOutputProcedureToken() This method is used to print the output parameter token when stored procedures are called
int	getMaxFieldNameSize() INTERNAL: returns the maximum number of characters that can be used in a field name on this platform.
java.util.Vector	getNativeTableInfo(java.lang.String table, java.lang.String creator, org.eclipse.persistence.internal.sessions.AbstractSession session) Return the catalog information through using the native SQL catalog selects.
java.lang.String	getOutputProcedureToken() This method is used to print the output parameter token when stored procedures are called
java.lang.String	getProcedureArgumentString() Used for sp defs.
java.lang.String	getProcedureCallHeader() Used for sp calls.
java.lang.String	getSelectForUpdateNoWaitString() INTERNAL: This syntax does no wait on the lock.
java.lang.String	getSelectForUpdateString() INTERNAL: Lock.
java.lang.String	getStoredProcedureParameterPrefix()
org.eclipse.persistence.internal.helper.DatabaseTable	getTempTableForTable(org.eclipse.persistence.internal.helper.DatabaseTable table) INTERNAL:
ValueReadQuery	getTimestampQuery() PUBLIC: This method returns the query to select the timestamp from the server for SQLServer.
void	initializeConnectionData(java.sql.Connection connection)
protected void	initializePlatformOperators() Initialize any platform-specific operators
boolean	isOutputAllowWithResultSet() INTERNAL: Return true if output parameters can be built with result sets.
boolean	isSQLServer()
static ExpressionOperator	locate2Operator() INTERNAL: create the Locate2 Operator for this platform
java.util.Hashtable	maximumNumericValues() Builds a table of maximum numeric values keyed on java class.
java.util.Hashtable	minimumNumericValues() Builds a table of minimum numeric values keyed on java class.
ExpressionOperator	modOperator() Override the default MOD operator.
protected ExpressionOperator	operatorOuterJoin()
void	printFieldIdentityClause(java.io.Writer writer) INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.
void	printFieldNullClause(java.io.Writer writer) INTERNAL: Append the receiver's field 'NULL' constraint clause to a writer.
boolean	requiresProcedureCallBrackets() USed for sp calls.
boolean	requiresProcedureCallOuputToken() Used for sp calls.
boolean	shouldPrintInOutputTokenBeforeType() This is required in the construction of the stored procedures with output parameters
boolean	shouldPrintLockingClauseAfterWhereClause() INTERNAL: Indicates whether locking clause should be printed after where clause by SQLSelectStatement.
boolean	shouldPrintOutputTokenBeforeType() This is required in the construction of the stored procedures with output parameters
boolean	shouldUseJDBCOuterJoinSyntax() JDBC defines and outer join syntax, many drivers do not support this.
ExpressionOperator	singleArgumentSubstringOperator() Override the default SubstringSingleArg operator.
boolean	supportsIdentity() INTERNAL: Indicates whether the platform supports identity.
boolean	supportsLocalTempTables() INTERNAL:
boolean	supportsSequenceObjects() INTERNAL:
static ExpressionOperator	trim2Operator() INTERNAL: Build Trim operator.
static ExpressionOperator	trimOperator() INTERNAL: Use RTRIM(LTRIM(?))
void	writeUpdateOriginalFromTempTableSql(java.io.Writer writer, org.eclipse.persistence.internal.helper.DatabaseTable table, java.util.Collection pkFields, java.util.Collection assignedFields) INTERNAL:

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

addBatch, addStructConverter, allowsSizeInProcedureArguments, appendBoolean, appendLiteralToCall, appendLiteralToCallWithBinding, appendNumber, appendParameter, appendParameterInternal, appendString, autoCommit, beginTransaction, buildBatchCriteria, buildBatchCriteriaForComplexId, buildCallWithReturning, buildClassTypes, buildCreateIndex, buildCreateIndex, buildDropIndex, buildDropIndex, buildProcedureCallString, buildSequenceObjectAlterIncrementWriter, buildSequenceObjectCreationWriter, buildSequenceObjectDeletionWriter, canBatchWriteWithOptimisticLocking, canBuildCallWithReturning, commitTransaction, computeMaxRowsForSQL, convertToDatabaseType, copyInto, createArray, createArray, createPlatformDefaultSequence, createStruct, createStruct, executeBatch, executeStoredProcedure, freeTemporaryObject, getAssignmentString, getBatchBeginString, getBatchEndString, getBatchRowCountAssignString, getBatchRowCountDeclareString, getBatchRowCountReturnString, getBatchWritingMechanism, getCastSizeForVarcharParameter, getClassTypes, getConnection, getConnectionUserName, getConstraintDeletionString, getCreateDatabaseSchemaString, getCreateTempTableSqlBodyForTable, getCreateTempTableSqlSuffix, getCreateViewString, getCursorCode, getCustomModifyValueForCall, getDefaultSequenceTableName, getDriverSupportsNVarChar, getDropCascadeString, getDropDatabaseSchemaString, getFieldTypeDefinition, getFieldTypes, getFunctionCallHeader, getIdentifierQuoteCharacter, getIndexNamePrefix, getInputProcedureToken, getJDBCOuterJoinString, getJDBCType, getJDBCType, getJDBCTypeForSetNull, getJdbcTypeName, getMaxBatchWritingSize, getMaxForeignKeyNameSize, getMaxIndexNameSize, getMaxUniqueKeyNameSize, getNoWaitString, getObjectFromResultSet, getPartitioningCallback, getPingSQL, getProcedureArgumentSetter, getProcedureAsString, getProcedureBeginString, getProcedureCallTail, getProcedureEndString, getQualifiedName, getQualifiedSequenceTableName, getRefValue, getRefValue, getSelectForUpdateOfString, getSelectForUpdateWaitString, getSequenceCounterFieldName, getSequenceNameFieldName, getSequencePreallocationSize, getSequenceTableName, getStatementCacheSize, getStoredProcedureTerminationToken, getStringBindingSize, getStructConverters, getTableCreationSuffix, getTableExistsQuery, getTransactionIsolation, getTypeConverters, getUniqueConstraintDeletionString, getUseNationalCharacterVaryingTypeForString, getVPDClearIdentifierQuery, getVPDCreationFunctionString, getVPDCreationPolicyString, getVPDDeletionString, getVPDSetIdentifierQuery, hasPartitioningCallback, initialize, isAlterSequenceObjectSupported, isCastRequired, isDynamicSQLRequiredForFunctions, isForUpdateCompatibleWithDistinct, isInformixOuterJoin, isJDBCExecuteCompliant, isLobCompatibleWithDistinct, isLockTimeoutException, isNullAllowedInSelectClause, isRowCountOutputParameterRequired, isXDBDocument, minimumTimeIncrement, prepareBatchStatement, printFieldNotNullClause, printFieldTypeSize, printFieldTypeSize, printFieldUnique, printFieldUnique, printSQLSelectStatement, printStoredFunctionReturnKeyWord, printValuelist, printValuelist, registerOutputParameter, requiresNamedPrimaryKeyConstraints, requiresProcedureBrackets, requiresTableInIndexDropDDL, requiresTypeNameToRegisterOutputParameter, requiresUniqueConstraintCreationOnTableCreate, retrieveFirstPrimaryKeyOrOne, rollbackTransaction, setBatchWritingMechanism, setCastSizeForVarcharParameter, setClassTypes, setCursorCode, setDriverName, setDriverSupportsNVarChar, setFieldTypes, setIsCastRequired, setMaxBatchWritingSize, setNullFromDatabaseField, setParameterValueInDatabaseCall, setPartitioningCallback, setPingSQL, setPrintInnerJoinInWhereClause, setPrintOuterJoinInWhereClause, setSequenceCounterFieldName, setSequenceNameFieldName, setSequenceTableName, setShouldBindAllParameters, setShouldBindLiterals, setShouldCacheAllStatements, setShouldCreateIndicesOnForeignKeys, 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, shouldForceFieldNamesToUpperCase, shouldIgnoreCaseOnFieldComparisons, shouldIgnoreException, shouldOptimizeDataConversion, shouldPrintAliasForUpdate, shouldPrintConstraintNameAfter, shouldPrintFieldIdentityClause, shouldPrintForUpdateClause, shouldPrintInnerJoinInWhereClause, shouldPrintInputTokenAtStart, shouldPrintOuterJoinInWhereClause, shouldPrintOutputTokenAtStart, shouldPrintStoredProcedureArgumentNameInCall, shouldPrintStoredProcedureVariablesAfterBeginString, shouldTempTableSpecifyPrimaryKeys, shouldTrimStrings, shouldUseCustomModifyForCall, shouldUseGetSetNString, shouldUseRownumFiltering, supportsANSIInnerJoinSyntax, supportsAutoCommit, supportsAutoConversionToNumericForArithmeticOperations, supportsConnectionUserName, supportsCountDistinctWithMultipleFields, supportsDeleteOnCascade, supportsForeignKeyConstraints, supportsGlobalTempTables, supportsIndexes, supportsIndividualTableLocking, supportsLockingQueriesWithMultipleTables, supportsNestingOuterJoins, supportsOuterJoinsWithBrackets, supportsPrimaryKeyConstraint, supportsStoredFunctions, supportsTempTables, supportsUniqueColumns, supportsUniqueKeyConstraints, supportsVPD, usesBatchWriting, usesByteArrayBinding, usesJDBCBatchWriting, usesNativeBatchWriting, usesNativeSQL, usesSequenceTable, usesStreamsForBinding, usesStringBinding, wasFailureCommunicationBased, writeAddColumnClause, writeAutoAssignmentSetClause, writeAutoJoinWhereClause, writeCleanUpTempTableSql, writeCreateTempTableSql, writeDeleteFromTargetTableUsingTempTableSql, writeFields, writeFieldsAutoClause, writeFieldsList, writeInsertIntoTableSql, writeJoinWhereClause, writeLOB, writeParameterMarker, writeTableCreationSuffix

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

addOperator, addSequence, addSequence, buildNativeCall, buildSelectQueryForIdentity, buildSelectQueryForSequenceObject, clone, convertObject, createConnectionCustomizer, createExpressionFor, getConversionManager, getDataTypesConvertedFrom, getDataTypesConvertedTo, getDefaultNativeSequenceToTable, getDefaultSeqenceAtNextValue, getDefaultSequence, getDefaultSequenceToWrite, getEndDelimiter, getOperator, getPlatformOperators, getSelectSequenceQuery, getSequence, getSequences, getSequencesToWrite, getStartDelimiter, getTableQualifier, getTimestampFromServer, getUpdateSequenceQuery, hasDefaultSequence, initializeDefaultQueries, isAccess, isAttunity, isCloudscape, isDB2, isDBase, isDerby, isFirebird, isH2, isHANA, isHSQL, isInformix, isMaxDB, isMySQL, isODBC, isOracle, isOracle9, isPervasive, isPointBase, isPostgreSQL, isSQLAnywhere, isSybase, isSymfoware, isTimesTen, isTimesTen7, removeAllSequences, 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

Constructor Detail

SQLServerPlatform

public SQLServerPlatform()

Method Detail

initializeConnectionData

public void initializeConnectionData(java.sql.Connection connection)
                              throws java.sql.SQLException

Overrides:

initializeConnectionData in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.sql.SQLException

appendByteArray

protected void appendByteArray(byte[] bytes,
                               java.io.Writer writer)
                        throws java.io.IOException

If using native SQL then print a byte[] as '0xFF...'

Overrides:

appendByteArray in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException

appendDate

protected void appendDate(java.sql.Date date,
                          java.io.Writer writer)
                   throws java.io.IOException

Answer a platform correct string representation of a Date, suitable for SQL generation. Native format: 'yyyy-mm-dd

Overrides:

appendDate in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException

appendSybaseTimestamp

protected void appendSybaseTimestamp(java.sql.Timestamp timestamp,
                                     java.io.Writer writer)
                              throws java.io.IOException

Write a timestamp in Sybase specific format ( yyyy-mm-dd-hh.mm.ss.fff)

Throws:

java.io.IOException

appendSybaseCalendar

protected void appendSybaseCalendar(java.util.Calendar calendar,
                                    java.io.Writer writer)
                             throws java.io.IOException

Write a timestamp in Sybase specific format ( yyyy-mm-dd-hh.mm.ss.fff)

Throws:

java.io.IOException

appendTime

protected void appendTime(java.sql.Time time,
                          java.io.Writer writer)
                   throws java.io.IOException

Answer a platform correct string representation of a Time, suitable for SQL generation. The time is printed in the ODBC platform independent format {t'hh:mm:ss'}.

Overrides:

appendTime in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException

appendTimestamp

protected void appendTimestamp(java.sql.Timestamp timestamp,
                               java.io.Writer writer)
                        throws java.io.IOException

Answer a platform correct string representation of a Timestamp, suitable for SQL generation. The date is printed in the ODBC platform independent format {d'YYYY-MM-DD'}.

Overrides:

appendTimestamp in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException

appendCalendar

protected void appendCalendar(java.util.Calendar calendar,
                              java.io.Writer writer)
                       throws java.io.IOException

Answer a platform correct string representation of a Calendar, suitable for SQL generation. The date is printed in the ODBC platform independent format {d'YYYY-MM-DD'}.

Overrides:

appendCalendar in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException

buildFieldTypes

protected java.util.Hashtable buildFieldTypes()

Overrides:

buildFieldTypes in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

buildSelectQueryForIdentity

public ValueReadQuery buildSelectQueryForIdentity()

INTERNAL: Build the identity query for native sequencing.

Overrides:

buildSelectQueryForIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

buildSelectQueryForSequenceObject

public ValueReadQuery buildSelectQueryForSequenceObject(java.lang.String qualifiedSeqName,
                                                        java.lang.Integer size)

INTERNAL: Produce a DataReadQuery which updates(!) the sequence number in the database and returns it.

Overrides:

buildSelectQueryForSequenceObject in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

Parameters:

qualifiedSeqName - a defined database sequence

dontBindUpdateAllQueryUsingTempTables

public boolean dontBindUpdateAllQueryUsingTempTables()

INTERNAL: In SQLServer local temporary table created by one PreparedStatement can't be used in another PreparedStatement. Workaround is to use Statement instead of PreparedStatement.

Overrides:

dontBindUpdateAllQueryUsingTempTables in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getBatchDelimiterString

public java.lang.String getBatchDelimiterString()

Used for batch writing and sp defs.

Overrides:

getBatchDelimiterString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getCreationInOutputProcedureToken

public java.lang.String getCreationInOutputProcedureToken()

This method is used to print the required output parameter token for the specific platform. Used when stored procedures are created.

Overrides:

getCreationInOutputProcedureToken in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getCreationOutputProcedureToken

public java.lang.String getCreationOutputProcedureToken()

This method is used to print the required output parameter token for the specific platform. Used when stored procedures are created.

Overrides:

getCreationOutputProcedureToken in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getInOutputProcedureToken

public java.lang.String getInOutputProcedureToken()

This method is used to print the output parameter token when stored procedures are called

Overrides:

getInOutputProcedureToken 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 java.util.Vector getNativeTableInfo(java.lang.String table,
                                           java.lang.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.

getOutputProcedureToken

public java.lang.String getOutputProcedureToken()

This method is used to print the output parameter token when stored procedures are called

Overrides:

getOutputProcedureToken in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getProcedureArgumentString

public java.lang.String getProcedureArgumentString()

Used for sp defs.

Overrides:

getProcedureArgumentString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getProcedureCallHeader

public java.lang.String getProcedureCallHeader()

Used for sp calls.

Overrides:

getProcedureCallHeader in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getStoredProcedureParameterPrefix

public java.lang.String getStoredProcedureParameterPrefix()

Overrides:

getStoredProcedureParameterPrefix in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getTimestampQuery

public ValueReadQuery getTimestampQuery()

PUBLIC: This method returns the query to select the timestamp from the server for SQLServer.

Specified by:

getTimestampQuery in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

getTimestampQuery in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

getSelectForUpdateString

public java.lang.String getSelectForUpdateString()

INTERNAL: Lock. UPDLOCK seems like the correct table hint to use: HOLDLOCK is too weak - doesn't lock out another read with HOLDLOCK, XLOCK is too strong - locks out another read which doesn't use any locks. UPDLOCK seems to behave exactly like Oracle's FOR UPDATE: locking out updates and other reads with FOR UPDATE but allowing other reads without locks. SQLServer seems to decide itself on the granularity of the lock - it could lock more than the returned rows (for instance a page). It could be forced to obtain to make sure to obtain row level lock: WITH (UPDLOCK, ROWLOCK) However this approach is strongly discouraged because it can consume too much resources: selecting 900 rows from and requiring a "personal" lock for each row may not be feasible because of not enough memory available at the moment - in that case SQLServer will wait until the resource becomes available.

Overrides:

getSelectForUpdateString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getSelectForUpdateNoWaitString

public java.lang.String getSelectForUpdateNoWaitString()

INTERNAL: This syntax does no wait on the lock.

Overrides:

getSelectForUpdateNoWaitString in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

shouldPrintLockingClauseAfterWhereClause

public boolean shouldPrintLockingClauseAfterWhereClause()

INTERNAL: Indicates whether locking clause should be printed after where clause by SQLSelectStatement. Example: on Oracle platform (method returns true): SELECT ADDRESS_ID, ... FROM ADDRESS WHERE (ADDRESS_ID = ?) FOR UPDATE on SQLServer platform (method returns false): SELECT ADDRESS_ID, ... FROM ADDRESS WITH (UPDLOCK) WHERE (ADDRESS_ID = ?)

Overrides:

shouldPrintLockingClauseAfterWhereClause in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

initializePlatformOperators

protected void initializePlatformOperators()

Initialize any platform-specific operators

Overrides:

initializePlatformOperators in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

extractOperator

public static ExpressionOperator extractOperator()

INTERNAL: Derby does not support EXTRACT, but does have DATEPART.

trimOperator

public static ExpressionOperator trimOperator()

INTERNAL: Use RTRIM(LTRIM(?)) function for trim.

trim2Operator

public static ExpressionOperator trim2Operator()

INTERNAL: Build Trim operator.

isOutputAllowWithResultSet

public boolean isOutputAllowWithResultSet()

INTERNAL: Return true if output parameters can be built with result sets.

Overrides:

isOutputAllowWithResultSet in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

isSQLServer

public boolean isSQLServer()

Specified by:

isSQLServer in interface org.eclipse.persistence.internal.databaseaccess.Platform

Overrides:

isSQLServer in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

maximumNumericValues

public java.util.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 java.util.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

modOperator

public ExpressionOperator modOperator()

Override the default MOD operator.

singleArgumentSubstringOperator

public ExpressionOperator singleArgumentSubstringOperator()

Override the default SubstringSingleArg operator.

operatorOuterJoin

protected ExpressionOperator operatorOuterJoin()

locate2Operator

public static ExpressionOperator locate2Operator()

INTERNAL: create the Locate2 Operator for this platform

printFieldIdentityClause

public void printFieldIdentityClause(java.io.Writer writer)
                              throws ValidationException

INTERNAL: Append the receiver's field 'identity' constraint clause to a writer.

Overrides:

printFieldIdentityClause in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

ValidationException

printFieldNullClause

public void printFieldNullClause(java.io.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

requiresProcedureCallBrackets

public boolean requiresProcedureCallBrackets()

USed for sp calls.

Overrides:

requiresProcedureCallBrackets in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

requiresProcedureCallOuputToken

public boolean requiresProcedureCallOuputToken()

Used for sp calls. Sybase must print output after output params.

Overrides:

requiresProcedureCallOuputToken in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

shouldPrintInOutputTokenBeforeType

public boolean shouldPrintInOutputTokenBeforeType()

This is required in the construction of the stored procedures with output parameters

Overrides:

shouldPrintInOutputTokenBeforeType in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

shouldPrintOutputTokenBeforeType

public boolean shouldPrintOutputTokenBeforeType()

This is required in the construction of the stored procedures with output parameters

Overrides:

shouldPrintOutputTokenBeforeType 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

supportsIdentity

public boolean supportsIdentity()

INTERNAL: Indicates whether the platform supports identity. SQLServer does through IDENTITY field types. This method is to be used *ONLY* by sequencing classes

Overrides:

supportsIdentity in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

supportsSequenceObjects

public boolean supportsSequenceObjects()

INTERNAL:

Overrides:

supportsSequenceObjects in class org.eclipse.persistence.internal.databaseaccess.DatasourcePlatform

supportsLocalTempTables

public boolean supportsLocalTempTables()

INTERNAL:

Overrides:

supportsLocalTempTables in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getCreateTempTableSqlPrefix

protected java.lang.String getCreateTempTableSqlPrefix()

INTERNAL:

Overrides:

getCreateTempTableSqlPrefix in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

getTempTableForTable

public org.eclipse.persistence.internal.helper.DatabaseTable getTempTableForTable(org.eclipse.persistence.internal.helper.DatabaseTable table)

INTERNAL:

Overrides:

getTempTableForTable in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

writeUpdateOriginalFromTempTableSql

public void writeUpdateOriginalFromTempTableSql(java.io.Writer writer,
                                                org.eclipse.persistence.internal.helper.DatabaseTable table,
                                                java.util.Collection pkFields,
                                                java.util.Collection assignedFields)
                                         throws java.io.IOException

INTERNAL:

Overrides:

writeUpdateOriginalFromTempTableSql in class org.eclipse.persistence.internal.databaseaccess.DatabasePlatform

Throws:

java.io.IOException