Package org.jaxen.expr
Class DefaultUnaryExpr
- java.lang.Object
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- org.jaxen.expr.DefaultExpr
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- org.jaxen.expr.DefaultUnaryExpr
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class DefaultUnaryExpr extends DefaultExpr implements UnaryExpr
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Field Summary
Fields Modifier and Type Field Description private Expr
expr
private static long
serialVersionUID
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Constructor Summary
Constructors Constructor Description DefaultUnaryExpr(Expr expr)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
evaluate(Context context)
Evaluate the expression in the given context, and return the result.Expr
getExpr()
Returns the expression following the minus sign.java.lang.String
getText()
Returns a String containing the XPath expression.Expr
simplify()
Simplifies the XPath expression.java.lang.String
toString()
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Methods inherited from class org.jaxen.expr.DefaultExpr
convertToIterator, convertToList
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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expr
private Expr expr
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Constructor Detail
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DefaultUnaryExpr
DefaultUnaryExpr(Expr expr)
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Method Detail
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getExpr
public Expr getExpr()
Description copied from interface:UnaryExpr
Returns the expression following the minus sign.
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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getText
public java.lang.String getText()
Description copied from interface:Expr
Returns a String containing the XPath expression.
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simplify
public Expr simplify()
Description copied from interface:Expr
Simplifies the XPath expression. For example, the expression//para[1 = 1]
could be simplified to//para
. In practice, this is usually a noop. Jaxen does not currently perform any simplification.- Specified by:
simplify
in interfaceExpr
- Overrides:
simplify
in classDefaultExpr
- Returns:
- the simplified expression
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evaluate
public java.lang.Object evaluate(Context context) throws JaxenException
Description copied from interface:Expr
Evaluate the expression in the given context, and return the result. The result will be ajava.lang.Double
for expressions that return a number, ajava.lang.String
for expressions that return a string, ajava.lang.Boolean
for expressions that return a boolean, and ajava.util.List
for expressions that return a node-set. In the latter case, the elements of the list are the actual objects from the source document model. Copies are not made.- Specified by:
evaluate
in interfaceExpr
- Parameters:
context
- the context in which the expression is evaluated- Returns:
- an object representing the result of the evaluation
- Throws:
JaxenException
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