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java.lang.Object com.hp.hpl.jena.graph.query.Expression.Base com.hp.hpl.jena.graph.query.Expression.Constant
public abstract static class Expression.Constant
An abstract base class for literal nodes; subclasses implement getValue().
Nested Class Summary |
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Nested classes/interfaces inherited from interface com.hp.hpl.jena.graph.query.Expression |
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Expression.Application, Expression.Base, Expression.BoolConstant, Expression.Constant, Expression.Fixed, Expression.Util, Expression.Valof, Expression.Variable |
Field Summary |
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Fields inherited from interface com.hp.hpl.jena.graph.query.Expression |
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FALSE, TRUE |
Constructor Summary | |
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Expression.Constant()
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Method Summary | |
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abstract java.lang.Object |
getValue()
If this Expression is a literal, answer the value of that literal. |
boolean |
isConstant()
Answer true iff this Expression represents a literal [Java object] value. |
Methods inherited from class com.hp.hpl.jena.graph.query.Expression.Base |
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argCount, equals, getArg, getFun, getName, isApply, isVariable |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.hp.hpl.jena.graph.query.Expression |
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prepare |
Constructor Detail |
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public Expression.Constant()
Method Detail |
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public boolean isConstant()
Expression
isConstant
in interface Expression
isConstant
in class Expression.Base
public abstract java.lang.Object getValue()
Expression
getValue
in interface Expression
getValue
in class Expression.Base
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