Package org.apache.qpid.server.query.engine.parsing.expression.logic

Class ExpressionWrapperExpression<T>

java.lang.Object

org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode<T,java.lang.Boolean>

org.apache.qpid.server.query.engine.parsing.expression.logic.ExpressionWrapperExpression<T>

Type Parameters:

T - Input parameter type

All Implemented Interfaces:

java.util.function.Function<T,java.lang.Boolean>, Expression<T,java.lang.Boolean>, ExpressionNode<T,java.lang.Boolean>

public class ExpressionWrapperExpression<T>
extends AbstractExpressionNode<T,java.lang.Boolean>

Wraps predicate into an expression.

Field Summary

Fields inherited from class org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode

_metadata

Constructor Summary

Constructors

Constructor	Description
ExpressionWrapperExpression(java.util.function.Predicate<T> predicate)	Constructor stores the predicate value

Method Summary

Modifier and Type	Method	Description
java.lang.Boolean	apply(T value)	Calls stored predicate using parameters and the value supplied

Methods inherited from class org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode

containsAggregation, ctx, evaluateChild, getAggregations, getAlias, getChild, getChildren, getParent, isAccessor, isInstantlyEvaluable, setAlias, setParent, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.qpid.server.query.engine.parsing.expression.Expression

andThen

Methods inherited from interface java.util.function.Function

andThen, compose

Constructor Detail

ExpressionWrapperExpression

public ExpressionWrapperExpression(java.util.function.Predicate<T> predicate)

Constructor stores the predicate value

Parameters:

predicate - Predicate to evaluate

Method Detail

apply

public java.lang.Boolean apply(T value)

Calls stored predicate using parameters and the value supplied

Parameters:

value - Object to handle

Returns:

Evaluation result