Class NullLiteralExpression<T,R>
- java.lang.Object
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- org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode<T,R>
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- org.apache.qpid.server.query.engine.parsing.expression.literal.ConstantExpression<T,R>
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- org.apache.qpid.server.query.engine.parsing.expression.literal.NullLiteralExpression<T,R>
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- Type Parameters:
T- Input parameter type
- All Implemented Interfaces:
Function<T,R>,Supplier<R>,Expression<T,R>,ExpressionNode<T,R>
public class NullLiteralExpression<T,R> extends ConstantExpression<T,R>
Holds a NULL value.
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Field Summary
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Fields inherited from class org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode
_metadata
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Constructor Summary
Constructors Constructor Description NullLiteralExpression()Constructor stores null value
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Method Summary
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Methods inherited from class org.apache.qpid.server.query.engine.parsing.expression.literal.ConstantExpression
apply, get, getAlias, of, of, toString
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Methods inherited from class org.apache.qpid.server.query.engine.parsing.expression.AbstractExpressionNode
containsAggregation, ctx, evaluateChild, getAggregations, getChild, getChildren, getParent, isAccessor, isInstantlyEvaluable, setAlias, setParent
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.qpid.server.query.engine.parsing.expression.Expression
andThen
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