Java XObject.bool方法代码示例

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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;
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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;
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
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 );
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
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 );
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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;
    }
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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);
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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;
}
 

import com.sun.org.apache.xpath.internal.objects.XObject; //导入方法依赖的package包/类
/**
 * 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();
}