19f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 29f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 39f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * or more contributor license agreements. See the NOTICE file 49f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed with this work for additional information 59f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * regarding copyright ownership. The ASF licenses this file 69f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 79f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * you may not use this file except in compliance with the License. 89f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * You may obtain a copy of the License at 99f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Unless required by applicable law or agreed to in writing, software 139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * See the License for the specific language governing permissions and 169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * limitations under the License. 179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * $Id: AVTPart.java 468643 2006-10-28 06:56:03Z minchau $ 209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpackage org.apache.xalan.templates; 229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.utils.FastStringBuffer; 249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.XPathContext; 259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/** 279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Class to hold a part, either a string or XPath, 289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * of an Attribute Value Template. 299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @xsl.usage internal 309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpublic abstract class AVTPart implements java.io.Serializable, XSLTVisitable 329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson{ 339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson static final long serialVersionUID = -1747749903613916025L; 349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Construct a part. 379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public AVTPart(){} 399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Get the AVT part as the original string. 429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return the AVT part as the original string. 449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public abstract String getSimpleString(); 469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Write the evaluated value into the given 499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * string buffer. 509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param xctxt The XPath context to use to evaluate this AVT. 529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param buf Buffer to write into. 539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param context The current source tree context. 549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param nsNode The current namespace context (stylesheet tree context). 559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 569f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws javax.xml.transform.TransformerException 579f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 589f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public abstract void evaluate( 599f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson XPathContext xctxt, FastStringBuffer buf, int context, 609f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson org.apache.xml.utils.PrefixResolver nsNode) 619f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throws javax.xml.transform.TransformerException; 629f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 639f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 649f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Set the XPath support. 659f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 669f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param support XPathContext to set. 679f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 689f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public void setXPathSupport(XPathContext support){} 699f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 709f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 719f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Tell if this expression or it's subexpressions can traverse outside 729f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * the current subtree. 739f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 749f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return true if traversal outside the context node's subtree can occur. 759f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 769f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public boolean canTraverseOutsideSubtree() 779f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 789f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return false; 799f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 809f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 819f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 829f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * This function is used to fixup variables from QNames to stack frame 839f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * indexes at stylesheet build time. 849f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param vars List of QNames that correspond to variables. This list 859f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * should be searched backwards for the first qualified name that 869f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * corresponds to the variable reference qname. The position of the 879f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * QName in the vector from the start of the vector will be its position 889f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * in the stack frame (but variables above the globalsTop value will need 899f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to be offset to the current stack frame). 909f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 919f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public abstract void fixupVariables(java.util.Vector vars, int globalsSize); 929f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 939f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 949f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson} 95