org.apache.cassandra.cql3

Class QueryProcessor

java.lang.Object

org.apache.cassandra.cql3.QueryProcessor

All Implemented Interfaces:

QueryHandler

public class QueryProcessor
extends java.lang.Object
implements QueryHandler

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.cql3.QueryHandler

QueryHandler.Prepared

Field Summary

Fields

Modifier and Type	Field and Description
static CassandraVersion	CQL_VERSION
static QueryProcessor	instance
static CQLMetrics	metrics

Method Summary

Modifier and Type	Method and Description
static void	clearInternalStatementsCache() Clear our internal statmeent cache for test purposes.
static void	clearPreparedStatements(boolean memoryOnly) Clears the prepared statement cache.
static UntypedResultSet	execute(java.lang.String query, ConsistencyLevel cl, java.lang.Object... values)
static UntypedResultSet	execute(java.lang.String query, ConsistencyLevel cl, QueryState state, java.lang.Object... values)
static UntypedResultSet	executeInternal(java.lang.String query, java.lang.Object... values)
static UntypedResultSet	executeInternalWithNow(int nowInSec, long queryStartNanoTime, java.lang.String query, java.lang.Object... values) A special version of executeLocally that takes the time used as "now" for the query in argument.
static UntypedResultSet	executeInternalWithPaging(java.lang.String query, int pageSize, java.lang.Object... values)
static UntypedResultSet	executeOnceInternal(java.lang.String query, java.lang.Object... values) Same than executeLocally, but to use for queries we know are only executed once so that the created statement object is not cached.
QueryHandler.Prepared	getPrepared(MD5Digest id)
static CQLStatement	getStatement(java.lang.String queryStr, ClientState clientState)
static QueryState	internalQueryState()
static QueryOptions	makeInternalOptions(CQLStatement prepared, java.lang.Object[] values)
CQLStatement	parse(java.lang.String queryString, QueryState queryState, QueryOptions options)
static CQLStatement.Raw	parseStatement(java.lang.String queryStr)
static <T extends CQLStatement.Raw> T	parseStatement(java.lang.String queryStr, java.lang.Class<T> klass, java.lang.String type)
static CQLStatement	parseStatement(java.lang.String queryStr, ClientState clientState)
static void	preloadPreparedStatement()
static ResultMessage.Prepared	prepare(java.lang.String queryString, ClientState clientState)
ResultMessage.Prepared	prepare(java.lang.String query, ClientState clientState, java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload)
static int	preparedStatementsCount()
static QueryHandler.Prepared	prepareInternal(java.lang.String query)
ResultMessage	process(CQLStatement prepared, QueryState queryState, QueryOptions options, long queryStartNanoTime)
ResultMessage	process(CQLStatement statement, QueryState state, QueryOptions options, java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload, long queryStartNanoTime)
static UntypedResultSet	process(java.lang.String query, ConsistencyLevel cl)
static UntypedResultSet	process(java.lang.String query, ConsistencyLevel cl, java.util.List<java.nio.ByteBuffer> values)
static ResultMessage	process(java.lang.String queryString, ConsistencyLevel cl, QueryState queryState, long queryStartNanoTime)
ResultMessage	processBatch(BatchStatement batch, QueryState queryState, BatchQueryOptions options, long queryStartNanoTime)
ResultMessage	processBatch(BatchStatement statement, QueryState state, BatchQueryOptions options, java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload, long queryStartNanoTime)
ResultMessage	processPrepared(CQLStatement statement, QueryState queryState, QueryOptions options, long queryStartNanoTime)
ResultMessage	processPrepared(CQLStatement statement, QueryState state, QueryOptions options, java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload, long queryStartNanoTime)
ResultMessage	processStatement(CQLStatement statement, QueryState queryState, QueryOptions options, long queryStartNanoTime)
static UntypedResultSet	resultify(java.lang.String query, PartitionIterator partitions)
static UntypedResultSet	resultify(java.lang.String query, RowIterator partition)
static void	validateKey(java.nio.ByteBuffer key)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CQL_VERSION

public static final CassandraVersion CQL_VERSION

instance

public static final QueryProcessor instance

metrics

public static final CQLMetrics metrics

Method Detail

preparedStatementsCount

public static int preparedStatementsCount()

preloadPreparedStatement

public static void preloadPreparedStatement()

clearPreparedStatements

public static void clearPreparedStatements(boolean memoryOnly)

Clears the prepared statement cache.

Parameters:

memoryOnly - true if only the in memory caches must be cleared, false otherwise.

internalQueryState

public static QueryState internalQueryState()

getPrepared

public QueryHandler.Prepared getPrepared(MD5Digest id)

Specified by:

getPrepared in interface QueryHandler

validateKey

public static void validateKey(java.nio.ByteBuffer key)
                        throws InvalidRequestException

Throws:

InvalidRequestException

processStatement

public ResultMessage processStatement(CQLStatement statement,
                                      QueryState queryState,
                                      QueryOptions options,
                                      long queryStartNanoTime)
                               throws RequestExecutionException,
                                      RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

process

public static ResultMessage process(java.lang.String queryString,
                                    ConsistencyLevel cl,
                                    QueryState queryState,
                                    long queryStartNanoTime)
                             throws RequestExecutionException,
                                    RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

parse

public CQLStatement parse(java.lang.String queryString,
                          QueryState queryState,
                          QueryOptions options)

Specified by:

parse in interface QueryHandler

process

public ResultMessage process(CQLStatement statement,
                             QueryState state,
                             QueryOptions options,
                             java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload,
                             long queryStartNanoTime)
                      throws RequestExecutionException,
                             RequestValidationException

Specified by:

process in interface QueryHandler

Throws:

RequestExecutionException

RequestValidationException

process

public ResultMessage process(CQLStatement prepared,
                             QueryState queryState,
                             QueryOptions options,
                             long queryStartNanoTime)
                      throws RequestExecutionException,
                             RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

parseStatement

public static CQLStatement parseStatement(java.lang.String queryStr,
                                          ClientState clientState)
                                   throws RequestValidationException

Throws:

RequestValidationException

process

public static UntypedResultSet process(java.lang.String query,
                                       ConsistencyLevel cl)
                                throws RequestExecutionException

Throws:

RequestExecutionException

process

public static UntypedResultSet process(java.lang.String query,
                                       ConsistencyLevel cl,
                                       java.util.List<java.nio.ByteBuffer> values)
                                throws RequestExecutionException

Throws:

RequestExecutionException

makeInternalOptions

public static QueryOptions makeInternalOptions(CQLStatement prepared,
                                               java.lang.Object[] values)

prepareInternal

public static QueryHandler.Prepared prepareInternal(java.lang.String query)
                                             throws RequestValidationException

Throws:

RequestValidationException

executeInternal

public static UntypedResultSet executeInternal(java.lang.String query,
                                               java.lang.Object... values)

execute

public static UntypedResultSet execute(java.lang.String query,
                                       ConsistencyLevel cl,
                                       java.lang.Object... values)
                                throws RequestExecutionException

Throws:

RequestExecutionException

execute

public static UntypedResultSet execute(java.lang.String query,
                                       ConsistencyLevel cl,
                                       QueryState state,
                                       java.lang.Object... values)
                                throws RequestExecutionException

Throws:

RequestExecutionException

executeInternalWithPaging

public static UntypedResultSet executeInternalWithPaging(java.lang.String query,
                                                         int pageSize,
                                                         java.lang.Object... values)

executeOnceInternal

public static UntypedResultSet executeOnceInternal(java.lang.String query,
                                                   java.lang.Object... values)

Same than executeLocally, but to use for queries we know are only executed once so that the created statement object is not cached.

executeInternalWithNow

public static UntypedResultSet executeInternalWithNow(int nowInSec,
                                                      long queryStartNanoTime,
                                                      java.lang.String query,
                                                      java.lang.Object... values)

A special version of executeLocally that takes the time used as "now" for the query in argument. Note that this only make sense for Selects so this only accept SELECT statements and is only useful in rare cases.

resultify

public static UntypedResultSet resultify(java.lang.String query,
                                         RowIterator partition)

resultify

public static UntypedResultSet resultify(java.lang.String query,
                                         PartitionIterator partitions)

prepare

public ResultMessage.Prepared prepare(java.lang.String query,
                                      ClientState clientState,
                                      java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload)
                               throws RequestValidationException

Specified by:

prepare in interface QueryHandler

Throws:

RequestValidationException

prepare

public static ResultMessage.Prepared prepare(java.lang.String queryString,
                                             ClientState clientState)

processPrepared

public ResultMessage processPrepared(CQLStatement statement,
                                     QueryState state,
                                     QueryOptions options,
                                     java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload,
                                     long queryStartNanoTime)
                              throws RequestExecutionException,
                                     RequestValidationException

Specified by:

processPrepared in interface QueryHandler

Throws:

RequestExecutionException

RequestValidationException

processPrepared

public ResultMessage processPrepared(CQLStatement statement,
                                     QueryState queryState,
                                     QueryOptions options,
                                     long queryStartNanoTime)
                              throws RequestExecutionException,
                                     RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

processBatch

public ResultMessage processBatch(BatchStatement statement,
                                  QueryState state,
                                  BatchQueryOptions options,
                                  java.util.Map<java.lang.String,java.nio.ByteBuffer> customPayload,
                                  long queryStartNanoTime)
                           throws RequestExecutionException,
                                  RequestValidationException

Specified by:

processBatch in interface QueryHandler

Throws:

RequestExecutionException

RequestValidationException

processBatch

public ResultMessage processBatch(BatchStatement batch,
                                  QueryState queryState,
                                  BatchQueryOptions options,
                                  long queryStartNanoTime)
                           throws RequestExecutionException,
                                  RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

getStatement

public static CQLStatement getStatement(java.lang.String queryStr,
                                        ClientState clientState)
                                 throws RequestValidationException

Throws:

RequestValidationException

parseStatement

public static <T extends CQLStatement.Raw> T parseStatement(java.lang.String queryStr,
                                                            java.lang.Class<T> klass,
                                                            java.lang.String type)
                                                     throws SyntaxException

Throws:

SyntaxException

parseStatement

public static CQLStatement.Raw parseStatement(java.lang.String queryStr)
                                       throws SyntaxException

Throws:

SyntaxException

clearInternalStatementsCache

public static void clearInternalStatementsCache()

Clear our internal statmeent cache for test purposes.