Package org.springframework.data.repository.query

Class CachingValueExpressionDelegate

java.lang.Object

org.springframework.data.repository.query.ValueExpressionDelegate

org.springframework.data.repository.query.CachingValueExpressionDelegate

All Implemented Interfaces:

ValueExpressionParser

public class CachingValueExpressionDelegate
extends ValueExpressionDelegate

Caching variant of ValueExpressionDelegate.

Since:

3.4

Author:

Mark Paluch

Constructor Summary

Constructors

Constructor	Description
CachingValueExpressionDelegate(QueryMethodValueEvaluationContextAccessor providerFactory, ValueExpressionParser valueExpressionParser)	Creates a new CachingValueExpressionDelegate given QueryMethodValueEvaluationContextAccessor and ValueExpressionParser.
CachingValueExpressionDelegate(ValueExpressionDelegate delegate)	Creates a new CachingValueExpressionDelegate given ValueExpressionDelegate.

Method Summary

Modifier and Type	Method	Description
ValueExpressionParser	getValueExpressionParser()
ValueExpression	parse(String expressionString)	Parses the expression string and return an Expression object you can use for repeated evaluation.

Methods inherited from class org.springframework.data.repository.query.ValueExpressionDelegate

create, createValueContextProvider, getEvaluationContextAccessor

Methods inherited from class java.lang.Object

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

Constructor Details

CachingValueExpressionDelegate

public CachingValueExpressionDelegate(ValueExpressionDelegate delegate)

Creates a new CachingValueExpressionDelegate given ValueExpressionDelegate.

Parameters:

delegate - must not be null.

CachingValueExpressionDelegate

public CachingValueExpressionDelegate(QueryMethodValueEvaluationContextAccessor providerFactory,
 ValueExpressionParser valueExpressionParser)

Creates a new CachingValueExpressionDelegate given QueryMethodValueEvaluationContextAccessor and ValueExpressionParser.

Parameters:

providerFactory - the factory to create value evaluation context providers, must not be null.

valueExpressionParser - the parser to parse expression strings into value expressions, must not be null.

Method Details

getValueExpressionParser

public ValueExpressionParser getValueExpressionParser()

Overrides:

getValueExpressionParser in class ValueExpressionDelegate

parse

public ValueExpression parse(String expressionString)
                      throws ParseException

Description copied from interface: ValueExpressionParser

Parses the expression string and return an Expression object you can use for repeated evaluation.

Some examples:

     #{3 + 4}
     #{name.firstName}
     ${key.one}
     #{name.lastName}-${key.one}
 

Specified by:

parse in interface ValueExpressionParser

Overrides:

parse in class ValueExpressionDelegate

Parameters:

expressionString - the raw expression string to parse.

Returns:

an evaluator for the parsed expression.

Throws:

ParseException - an exception occurred during parsing.