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com.tangosol.coherence.rest.query
Class CoherenceQueryLanguageEngine

java.lang.Object
com.tangosol.coherence.rest.query.AbstractQueryEngine
com.tangosol.coherence.rest.query.CoherenceQueryLanguageEngine

All Implemented Interfaces:

QueryEngine

public class CoherenceQueryLanguageEngine

extends AbstractQueryEngine

Coherence QL-based implementation of QueryEngine.

The query expression consumed by this implementation is the "where" predicate of the Coherence Query Language.

Note: Although this query engine supports paging, the current implementation still handles entire result set on the client. That can lead to massive memory consumption (and possible OutOfMemoryErrors) if invoked on large caches with an unrestricted query.

Author:

ic 2011.12.04

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.coherence.rest.query.AbstractQueryEngine

AbstractQueryEngine.ParsedQuery

Field Summary

Fields inherited from class com.tangosol.coherence.rest.query.AbstractQueryEngine

m_mapParsedQuery

Constructor Summary

CoherenceQueryLanguageEngine()

Method Summary

Query

prepareQuery(java.lang.String sQuery, java.util.Map mapParams) Prepares a Query for execution by replacing any parameter placeholders with the appropriate values from the parameter map.

Methods inherited from class com.tangosol.coherence.rest.query.AbstractQueryEngine

convertList, createBindings, parseQueryString, resolveParameterType

Constructor Detail

CoherenceQueryLanguageEngine

public CoherenceQueryLanguageEngine()

Method Detail

prepareQuery

public Query prepareQuery(java.lang.String sQuery,
                          java.util.Map mapParams)

Prepares a Query for execution by replacing any parameter placeholders with the appropriate values from the parameter map.

Parameters:

sQuery - query expression

mapParams - parameter values used to resolve parameters from query expression

Returns:

a Query instance ready for execution

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