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