Package com.j_spaces.jdbc.executor

Class QueryExecutor

java.lang.Object

com.j_spaces.jdbc.executor.AbstractQueryExecutor

com.j_spaces.jdbc.executor.QueryExecutor

All Implemented Interfaces:

IQueryExecutor, Externalizable, Serializable

public class QueryExecutor
extends AbstractQueryExecutor

Executes queries against the space. The executor traverses the expression tree, and executes queries according to the attached space templates.

Author:

anna

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	QueryExecutor.ExecutionTask

Nested classes/interfaces inherited from class com.j_spaces.jdbc.executor.AbstractQueryExecutor

AbstractQueryExecutor.EntriesOrderByComparator

Field Summary

Fields inherited from class com.j_spaces.jdbc.executor.AbstractQueryExecutor

_logger, query

Constructor Summary

Constructors

Constructor	Description
QueryExecutor()
QueryExecutor(AbstractDMLQuery query)

Method Summary

Modifier and Type	Method	Description
IQueryResultSet<IEntryPacket>	execute(ISpaceProxy space, Transaction txn, int readModifier, int max)
void	execute(AndNode exp, ISpaceProxy space, Transaction txn, int readModifier, int max)	Execute And expression - execute both children and union the results
void	execute(ExpNode expNode, ISpaceProxy space, Transaction txn, int readModifier, int max)
void	execute(InNode exp, ISpaceProxy space, Transaction txn, int readModifier, int max)	Execute IN expression - can be a list of simple values or an inner select query
void	execute(NotInNode exp, ISpaceProxy space, Transaction txn, int readModifier, int max)	execute NOT IN query
void	execute(OrNode exp, ISpaceProxy space, Transaction txn, int readModifier, int max)	Execute Or expression - execute both children and union the results

Methods inherited from class com.j_spaces.jdbc.executor.AbstractQueryExecutor

aggregate, avg, clear, convertEntriesToResultArrays, count, execute, executeTemplate, extractResults, filterDistinctEntries, getGroupByComparator, getIntermediateResults, getOrderByComparator, getQuery, groupBy, minMax, orderBy, readAll, readExternal, setResults, sum, traverseExpressionTree, writeExternal

Methods inherited from class java.lang.Object

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

Constructor Details

QueryExecutor

public QueryExecutor()

QueryExecutor

public QueryExecutor(AbstractDMLQuery query)

Method Details

execute

public void execute(OrNode exp,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
             throws SQLException

Description copied from interface: IQueryExecutor

Execute Or expression - execute both children and union the results

Throws:

SQLException

execute

public void execute(AndNode exp,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
             throws SQLException

Description copied from interface: IQueryExecutor

Execute And expression - execute both children and union the results

Throws:

SQLException

execute

public void execute(InNode exp,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
             throws SQLException

Description copied from interface: IQueryExecutor

Execute IN expression - can be a list of simple values or an inner select query

Throws:

SQLException

execute

public void execute(NotInNode exp,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
             throws SQLException

Description copied from interface: IQueryExecutor

execute NOT IN query

Throws:

SQLException

execute

public IQueryResultSet<IEntryPacket> execute(ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
                                      throws SQLException

Throws:

SQLException

execute

public void execute(ExpNode expNode,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
             throws SQLException

Throws:

SQLException