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107 lines
3.4 KiB
107 lines
3.4 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 1999-2005 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: FuncExtFunctionAvailable.java,v 1.2.4.1 2005/09/14 20:05:08 jeffsuttor Exp $
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*/
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package com.sun.org.apache.xpath.internal.functions;
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import com.sun.org.apache.xalan.internal.templates.Constants;
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import com.sun.org.apache.xpath.internal.ExtensionsProvider;
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import com.sun.org.apache.xpath.internal.XPathContext;
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import com.sun.org.apache.xpath.internal.compiler.FunctionTable;
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import com.sun.org.apache.xpath.internal.objects.XBoolean;
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import com.sun.org.apache.xpath.internal.objects.XObject;
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/**
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* Execute the ExtFunctionAvailable() function.
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* @xsl.usage advanced
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*/
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public class FuncExtFunctionAvailable extends FunctionOneArg
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{
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static final long serialVersionUID = 5118814314918592241L;
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transient private FunctionTable m_functionTable = null;
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/**
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* Execute the function. The function must return
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* a valid object.
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* @param xctxt The current execution context.
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* @return A valid XObject.
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*
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* @throws javax.xml.transform.TransformerException
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*/
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public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
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{
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String prefix;
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String namespace;
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String methName;
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String fullName = m_arg0.execute(xctxt).str();
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int indexOfNSSep = fullName.indexOf(':');
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if (indexOfNSSep < 0)
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{
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prefix = "";
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namespace = Constants.S_XSLNAMESPACEURL;
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methName = fullName;
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}
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else
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{
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prefix = fullName.substring(0, indexOfNSSep);
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namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix);
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if (null == namespace)
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return XBoolean.S_FALSE;
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methName = fullName.substring(indexOfNSSep + 1);
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}
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if (namespace.equals(Constants.S_XSLNAMESPACEURL))
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{
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try
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{
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if (null == m_functionTable) m_functionTable = new FunctionTable();
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return m_functionTable.functionAvailable(methName) ? XBoolean.S_TRUE : XBoolean.S_FALSE;
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}
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catch (Exception e)
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{
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return XBoolean.S_FALSE;
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}
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}
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else
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{
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//dml
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ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();
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return extProvider.functionAvailable(namespace, methName)
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? XBoolean.S_TRUE : XBoolean.S_FALSE;
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}
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}
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/**
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* The function table is an instance field. In order to access this instance
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* field during evaluation, this method is called at compilation time to
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* insert function table information for later usage. It should only be used
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* during compiling of XPath expressions.
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* @param aTable an instance of the function table
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*/
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public void setFunctionTable(FunctionTable aTable){
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m_functionTable = aTable;
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}
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}
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