1 package org.apache.commons.digester3.substitution; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import org.apache.commons.digester3.Substitutor; 23 import org.xml.sax.Attributes; 24 25 /** 26 * This Substitutor chains two Substitutors <code>a</code> and <code>b</code>. 27 * All values to substitute are first handled by <code>a</code> and passed to 28 * <code>b</code> afterwards. 29 */ 30 public class CompoundSubstitutor 31 extends Substitutor 32 { 33 34 /** 35 * Substitutor a 36 */ 37 private final Substitutor a; 38 39 /** 40 * Substitutor b 41 */ 42 private final Substitutor b; 43 44 /** 45 * Creates a new CompoundSubstitutor instance. All values overgiven to <code>substitute()</code> 46 * are first handled by <code>a</code> and passed to <code>b</code> afterwards. 47 * Both Substitutor have to be not null. 48 * 49 * @param a Substitutor a 50 * @param b Substitutor b 51 */ 52 public CompoundSubstitutor( Substitutor a, Substitutor b ) 53 { 54 if ( a == null ) 55 { 56 throw new IllegalArgumentException( "First Substitutor must be not null" ); 57 } 58 if ( b == null ) 59 { 60 throw new IllegalArgumentException( "Second Substitutor must be not null" ); 61 } 62 this.a = a; 63 this.b = b; 64 } 65 66 /** 67 * {@inheritDoc} 68 */ 69 @Override 70 public Attributes substitute( Attributes attributes ) 71 { 72 return b.substitute( a.substitute( attributes ) ); 73 } 74 75 /** 76 * {@inheritDoc} 77 */ 78 @Override 79 public String substitute( String bodyText ) 80 { 81 return b.substitute( a.substitute( bodyText ) ); 82 } 83 84 }