org.apache.xpath.operations
Class And

java.lang.Object
  |
  +--org.apache.xpath.Expression
        |
        +--org.apache.xpath.operations.Operation
              |
              +--org.apache.xpath.operations.And

public class And
extends Operation

The 'and' operation expression executer.

See Also:
Serialized Form

Constructor Summary
And()
           
 
Method Summary
 boolean bool(XPathContext xctxt)
          Evaluate this operation directly to a boolean.
 XObject execute(XPathContext xctxt)
          AND two expressions and return the boolean result.
 
Methods inherited from class org.apache.xpath.operations.Operation
callVisitors, canTraverseOutsideSubtree, deepEquals, fixupVariables, getExpression, getLeftOperand, getRightOperand, operate, setExpression, setLeftRight
 
Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

And

public And()
Method Detail

execute

public XObject execute(XPathContext xctxt)
                throws TransformerException
AND two expressions and return the boolean result. Override superclass method for optimization purposes.
Parameters:
xctxt - The runtime execution context.
Returns:
XBoolean.S_TRUE or XBoolean.S_FALSE.
Throws:
TransformerException -  
Overrides:
execute in class Operation

bool

public boolean bool(XPathContext xctxt)
             throws TransformerException
Evaluate this operation directly to a boolean.
Parameters:
xctxt - The runtime execution context.
Returns:
The result of the operation as a boolean.
Throws:
TransformerException -  
Overrides:
bool in class Expression


Copyright 2006 Apache XML Project. All Rights Reserved.