Java Code Examples for com.sun.org.apache.xpath.internal.objects.XObject#bool()

/**
 * Get result depending on the QName type defined in XPathConstants
 * @param resultObject the result of an evaluation
 * @param returnType the return type
 * @return result per the return type
 * @throws TransformerException if the result can not be converted to
 * the specified return type.
 */
Object getResultAsType(XObject resultObject, QName returnType)
    throws TransformerException {
    // XPathConstants.STRING
    if (returnType.equals(XPathConstants.STRING)) {
        return resultObject.str();
    }
    // XPathConstants.NUMBER
    if (returnType.equals(XPathConstants.NUMBER)) {
        return resultObject.num();
    }
    // XPathConstants.BOOLEAN
    if (returnType.equals(XPathConstants.BOOLEAN)) {
        return resultObject.bool();
    }
    // XPathConstants.NODESET ---ORdered, UNOrdered???
    if (returnType.equals(XPathConstants.NODESET)) {
        return resultObject.nodelist();
    }
    // XPathConstants.NODE
    if (returnType.equals(XPathConstants.NODE)) {
        NodeIterator ni = resultObject.nodeset();
        //Return the first node, or null
        return ni.nextNode();
    }
    // If isSupported check is already done then the execution path
    // shouldn't come here. Being defensive
    String fmsg = XSLMessages.createXPATHMessage(
            XPATHErrorResources.ER_UNSUPPORTED_RETURN_TYPE,
            new Object[] { returnType.toString()});
    throw new IllegalArgumentException (fmsg);
}
 

/**
 * AND two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_FALSE;
}
 

/**
 * OR two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (!expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_TRUE;
}
 

/**
 * AND two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_FALSE;
}
 

private Object getResultAsType( XObject resultObject, QName returnType )
    throws javax.xml.transform.TransformerException {
    // XPathConstants.STRING
    if ( returnType.equals( XPathConstants.STRING ) ) {
        return resultObject.str();
    }
    // XPathConstants.NUMBER
    if ( returnType.equals( XPathConstants.NUMBER ) ) {
        return new Double ( resultObject.num());
    }
    // XPathConstants.BOOLEAN
    if ( returnType.equals( XPathConstants.BOOLEAN ) ) {
        return new Boolean( resultObject.bool());
    }
    // XPathConstants.NODESET ---ORdered, UNOrdered???
    if ( returnType.equals( XPathConstants.NODESET ) ) {
        return resultObject.nodelist();
    }
    // XPathConstants.NODE
    if ( returnType.equals( XPathConstants.NODE ) ) {
        NodeIterator ni = resultObject.nodeset();
        //Return the first node, or null
        return ni.nextNode();
    }
    // If isSupported check is already done then the execution path
    // shouldn't come here. Being defensive
    String fmsg = XSLMessages.createXPATHMessage(
            XPATHErrorResources.ER_UNSUPPORTED_RETURN_TYPE,
            new Object[] { returnType.toString()});
    throw new IllegalArgumentException ( fmsg );
}
 

/**
 * OR two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (!expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_TRUE;
}
 

/**
 * AND two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_FALSE;
}
 

/**
 * OR two expressions and return the boolean result. Override
 * superclass method for optimization purposes.
 *
 * @param xctxt The runtime execution context.
 *
 * @return {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_TRUE} or
 * {@link com.sun.org.apache.xpath.internal.objects.XBoolean#S_FALSE}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{

  XObject expr1 = m_left.execute(xctxt);

  if (!expr1.bool())
  {
    XObject expr2 = m_right.execute(xctxt);

    return expr2.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  }
  else
    return XBoolean.S_TRUE;
}
 

private Object getResultAsType( XObject resultObject, QName returnType )
    throws javax.xml.transform.TransformerException {
    // XPathConstants.STRING
    if ( returnType.equals( XPathConstants.STRING ) ) {
        return resultObject.str();
    }
    // XPathConstants.NUMBER
    if ( returnType.equals( XPathConstants.NUMBER ) ) {
        return new Double ( resultObject.num());
    }
    // XPathConstants.BOOLEAN
    if ( returnType.equals( XPathConstants.BOOLEAN ) ) {
        return new Boolean( resultObject.bool());
    }
    // XPathConstants.NODESET ---ORdered, UNOrdered???
    if ( returnType.equals( XPathConstants.NODESET ) ) {
        return resultObject.nodelist();
    }
    // XPathConstants.NODE
    if ( returnType.equals( XPathConstants.NODE ) ) {
        NodeIterator ni = resultObject.nodeset();
        //Return the first node, or null
        return ni.nextNode();
    }
    String fmsg = XSLMessages.createXPATHMessage(
            XPATHErrorResources.ER_UNSUPPORTED_RETURN_TYPE,
            new Object[] { returnType.toString()});
    throw new IllegalArgumentException( fmsg );
}
 

/**
 * Read the XObject and set values in accordance with the result type
 * @param resultObject  internal XPath result object
 * @throws TransformerException  if there is an error reading the XPath
 * result.
 */
private void getResult(XObject resultObject) throws TransformerException {
    switch (resultType) {
        case XObject.CLASS_BOOLEAN:
            boolValue = resultObject.bool();
            mapToType = XPathResultType.BOOLEAN;
            break;
        case XObject.CLASS_NUMBER:
            numValue = resultObject.num();
            mapToType = XPathResultType.NUMBER;
            break;
        case XObject.CLASS_STRING:
            strValue = resultObject.str();
            mapToType = XPathResultType.STRING;
            break;
        case XObject.CLASS_NODESET:
            mapToType = XPathResultType.NODESET;
            nodeList = resultObject.nodelist();
            break;
        case XObject.CLASS_RTREEFRAG:  //NODE
            mapToType = XPathResultType.NODE;
            NodeIterator ni = resultObject.nodeset();
            //Return the first node, or null
            node = ni.nextNode();
            break;
    }
}
 

/**
 * Process the predicates.
 *
 * @param context The current context node.
 * @param xctxt The XPath runtime context.
 *
 * @return the result of executing the predicate expressions.
 *
 * @throws javax.xml.transform.TransformerException
 */
boolean executePredicates(int context, XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{

  int nPredicates = getPredicateCount();
  // System.out.println("nPredicates: "+nPredicates);
  if (nPredicates == 0)
    return true;

  PrefixResolver savedResolver = xctxt.getNamespaceContext();

  try
  {
    m_predicateIndex = 0;
    xctxt.pushSubContextList(this);
    xctxt.pushNamespaceContext(m_lpi.getPrefixResolver());
    xctxt.pushCurrentNode(context);

    for (int i = 0; i < nPredicates; i++)
    {
      // System.out.println("Executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      XObject pred = m_predicates[i].execute(xctxt);
      // System.out.println("\nBack from executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      // System.out.println("pred.getType(): "+pred.getType());
      if (XObject.CLASS_NUMBER == pred.getType())
      {
        if (DEBUG_PREDICATECOUNTING)
        {
          System.out.flush();
          System.out.println("\n===== start predicate count ========");
          System.out.println("m_predicateIndex: " + m_predicateIndex);
          // System.out.println("getProximityPosition(m_predicateIndex): "
          //                   + getProximityPosition(m_predicateIndex));
          System.out.println("pred.num(): " + pred.num());
        }

        int proxPos = this.getProximityPosition(m_predicateIndex);
        int predIndex = (int) pred.num();
        if (proxPos != predIndex)
        {
          if (DEBUG_PREDICATECOUNTING)
          {
            System.out.println("\nnode context: "+nodeToString(context));
            System.out.println("index predicate is false: "+proxPos);
            System.out.println("\n===== end predicate count ========");
          }
          return false;
        }
        else if (DEBUG_PREDICATECOUNTING)
        {
          System.out.println("\nnode context: "+nodeToString(context));
          System.out.println("index predicate is true: "+proxPos);
          System.out.println("\n===== end predicate count ========");
        }

        // If there is a proximity index that will not change during the
        // course of itteration, then we know there can be no more true
        // occurances of this predicate, so flag that we're done after
        // this.
        //
        // bugzilla 14365
        // We can't set m_foundLast = true unless we're sure that -all-
        // remaining parameters are stable, or else last() fails. Fixed so
        // only sets m_foundLast if on the last predicate
        if(m_predicates[i].isStableNumber() && i == nPredicates - 1)
        {
          m_foundLast = true;
        }
      }
      else if (!pred.bool())
        return false;

      countProximityPosition(++m_predicateIndex);
    }
  }
  finally
  {
    xctxt.popCurrentNode();
    xctxt.popNamespaceContext();
    xctxt.popSubContextList();
    m_predicateIndex = -1;
  }

  return true;
}
 

/**
 * Process the predicates.
 *
 * @param context The current context node.
 * @param xctxt The XPath runtime context.
 *
 * @return the result of executing the predicate expressions.
 *
 * @throws javax.xml.transform.TransformerException
 */
boolean executePredicates(int context, XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{

  int nPredicates = getPredicateCount();
  // System.out.println("nPredicates: "+nPredicates);
  if (nPredicates == 0)
    return true;

  PrefixResolver savedResolver = xctxt.getNamespaceContext();

  try
  {
    m_predicateIndex = 0;
    xctxt.pushSubContextList(this);
    xctxt.pushNamespaceContext(m_lpi.getPrefixResolver());
    xctxt.pushCurrentNode(context);

    for (int i = 0; i < nPredicates; i++)
    {
      // System.out.println("Executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      XObject pred = m_predicates[i].execute(xctxt);
      // System.out.println("\nBack from executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      // System.out.println("pred.getType(): "+pred.getType());
      if (XObject.CLASS_NUMBER == pred.getType())
      {
        if (DEBUG_PREDICATECOUNTING)
        {
          System.out.flush();
          System.out.println("\n===== start predicate count ========");
          System.out.println("m_predicateIndex: " + m_predicateIndex);
          // System.out.println("getProximityPosition(m_predicateIndex): "
          //                   + getProximityPosition(m_predicateIndex));
          System.out.println("pred.num(): " + pred.num());
        }

        int proxPos = this.getProximityPosition(m_predicateIndex);
        int predIndex = (int) pred.num();
        if (proxPos != predIndex)
        {
          if (DEBUG_PREDICATECOUNTING)
          {
            System.out.println("\nnode context: "+nodeToString(context));
            System.out.println("index predicate is false: "+proxPos);
            System.out.println("\n===== end predicate count ========");
          }
          return false;
        }
        else if (DEBUG_PREDICATECOUNTING)
        {
          System.out.println("\nnode context: "+nodeToString(context));
          System.out.println("index predicate is true: "+proxPos);
          System.out.println("\n===== end predicate count ========");
        }

        // If there is a proximity index that will not change during the
        // course of itteration, then we know there can be no more true
        // occurances of this predicate, so flag that we're done after
        // this.
        //
        // bugzilla 14365
        // We can't set m_foundLast = true unless we're sure that -all-
        // remaining parameters are stable, or else last() fails. Fixed so
        // only sets m_foundLast if on the last predicate
        if(m_predicates[i].isStableNumber() && i == nPredicates - 1)
        {
          m_foundLast = true;
        }
      }
      else if (!pred.bool())
        return false;

      countProximityPosition(++m_predicateIndex);
    }
  }
  finally
  {
    xctxt.popCurrentNode();
    xctxt.popNamespaceContext();
    xctxt.popSubContextList();
    m_predicateIndex = -1;
  }

  return true;
}
 

/**
 * Process the predicates.
 *
 * @param context The current context node.
 * @param xctxt The XPath runtime context.
 *
 * @return the result of executing the predicate expressions.
 *
 * @throws javax.xml.transform.TransformerException
 */
boolean executePredicates(int context, XPathContext xctxt)
        throws javax.xml.transform.TransformerException
{

  int nPredicates = getPredicateCount();
  // System.out.println("nPredicates: "+nPredicates);
  if (nPredicates == 0)
    return true;

  PrefixResolver savedResolver = xctxt.getNamespaceContext();

  try
  {
    m_predicateIndex = 0;
    xctxt.pushSubContextList(this);
    xctxt.pushNamespaceContext(m_lpi.getPrefixResolver());
    xctxt.pushCurrentNode(context);

    for (int i = 0; i < nPredicates; i++)
    {
      // System.out.println("Executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      XObject pred = m_predicates[i].execute(xctxt);
      // System.out.println("\nBack from executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
      // System.out.println("pred.getType(): "+pred.getType());
      if (XObject.CLASS_NUMBER == pred.getType())
      {
        if (DEBUG_PREDICATECOUNTING)
        {
          System.out.flush();
          System.out.println("\n===== start predicate count ========");
          System.out.println("m_predicateIndex: " + m_predicateIndex);
          // System.out.println("getProximityPosition(m_predicateIndex): "
          //                   + getProximityPosition(m_predicateIndex));
          System.out.println("pred.num(): " + pred.num());
        }

        int proxPos = this.getProximityPosition(m_predicateIndex);
        int predIndex = (int) pred.num();
        if (proxPos != predIndex)
        {
          if (DEBUG_PREDICATECOUNTING)
          {
            System.out.println("\nnode context: "+nodeToString(context));
            System.out.println("index predicate is false: "+proxPos);
            System.out.println("\n===== end predicate count ========");
          }
          return false;
        }
        else if (DEBUG_PREDICATECOUNTING)
        {
          System.out.println("\nnode context: "+nodeToString(context));
          System.out.println("index predicate is true: "+proxPos);
          System.out.println("\n===== end predicate count ========");
        }

        // If there is a proximity index that will not change during the
        // course of itteration, then we know there can be no more true
        // occurances of this predicate, so flag that we're done after
        // this.
        //
        // bugzilla 14365
        // We can't set m_foundLast = true unless we're sure that -all-
        // remaining parameters are stable, or else last() fails. Fixed so
        // only sets m_foundLast if on the last predicate
        if(m_predicates[i].isStableNumber() && i == nPredicates - 1)
        {
          m_foundLast = true;
        }
      }
      else if (!pred.bool())
        return false;

      countProximityPosition(++m_predicateIndex);
    }
  }
  finally
  {
    xctxt.popCurrentNode();
    xctxt.popNamespaceContext();
    xctxt.popSubContextList();
    m_predicateIndex = -1;
  }

  return true;
}
 

/**
 * Apply the operation to two operands, and return the result.
 *
 *
 * @param right non-null reference to the evaluated right operand.
 *
 * @return non-null reference to the XObject that represents the result of the operation.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject operate(XObject right) throws javax.xml.transform.TransformerException
{

  if (XObject.CLASS_BOOLEAN == right.getType())
    return right;
  else
    return right.bool() ? XBoolean.S_TRUE : XBoolean.S_FALSE;
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}
 

/**
 * Evaluate an XPath string and return true if the output is to be included or not.
 *  @param contextNode The node to start searching from.
 *  @param xpathnode The XPath node
 *  @param str The XPath expression
 *  @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
 */
public boolean evaluate(Node contextNode, Node xpathnode, String str, Node namespaceNode)
    throws TransformerException {
    XObject object = eval(contextNode, xpathnode, str, namespaceNode);
    return object.bool();
}