org.apache.xpath.operations
Class Equals

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

public class Equals

extends Operation

The '=' operation expression executer.

See Also:

Serialized Form

Constructor Summary

Equals()

Method Summary

boolean	bool(XPathContext xctxt) Execute a binary operation by calling execute on each of the operands, and then calling the operate method on the derived class.
XObject	operate(XObject left, XObject right) Apply the operation to two operands, and return the result.

Methods inherited from class org.apache.xpath.operations.Operation

callVisitors, canTraverseOutsideSubtree, deepEquals, execute, fixupVariables, getExpression, getLeftOperand, getRightOperand, 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

Equals

public Equals()

Method Detail

operate

public XObject operate(XObject left,
                       XObject right)
                throws TransformerException

Apply the operation to two operands, and return the result.

Parameters:

left - non-null reference to the evaluated left operand.

right - non-null reference to the evaluated right operand.

Returns:

non-null reference to the XObject that represents the result of the operation.

Throws:

TransformerException -

Overrides:

operate in class Operation

bool

public boolean bool(XPathContext xctxt)
             throws TransformerException

Execute a binary operation by calling execute on each of the operands, and then calling the operate method on the derived class.

Parameters:

xctxt - The runtime execution context.

Returns:

The XObject result of the operation.

Throws:

TransformerException -

Overrides:

bool in class Expression