001 // Copyright 2004, 2005 The Apache Software Foundation 002 // 003 // Licensed under the Apache License, Version 2.0 (the "License"); 004 // you may not use this file except in compliance with the License. 005 // You may obtain a copy of the License at 006 // 007 // http://www.apache.org/licenses/LICENSE-2.0 008 // 009 // Unless required by applicable law or agreed to in writing, software 010 // distributed under the License is distributed on an "AS IS" BASIS, 011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 // See the License for the specific language governing permissions and 013 // limitations under the License. 014 015 package org.apache.hivemind.schema.rules; 016 017 import org.apache.commons.logging.Log; 018 import org.apache.commons.logging.LogFactory; 019 import org.apache.hivemind.Element; 020 import org.apache.hivemind.ErrorHandler; 021 import org.apache.hivemind.schema.SchemaProcessor; 022 import org.apache.hivemind.schema.Translator; 023 import org.apache.hivemind.util.PropertyUtils; 024 025 /** 026 * Used to set a property of the top object on the stack to the value 027 * of the element's content. Created from the <code><read-content></code> 028 * element. 029 * 030 * <p> 031 * Note: an {@link org.apache.hivemind.Element}'s content is trimmed 032 * of leading and trailing whitespace as it is parsed and, additionally, 033 * will never be null (though it may be the empty string). 034 * 035 * @author Howard Lewis Ship 036 */ 037 public class ReadContentRule extends BaseRule 038 { 039 private static final Log LOG = LogFactory.getLog(ReadContentRule.class); 040 041 private String _propertyName; 042 043 public void begin(SchemaProcessor processor, Element element) 044 { 045 String value = RuleUtils.processText(processor, element, element.getContent()); 046 047 try 048 { 049 Translator t = processor.getContentTranslator(); 050 051 Object target = processor.peek(); 052 053 Class propertyType = PropertyUtils.getPropertyType(target, _propertyName); 054 055 Object finalValue = 056 t.translate( 057 processor.getContributingModule(), 058 propertyType, 059 value, 060 element.getLocation()); 061 062 PropertyUtils.write(target, _propertyName, finalValue); 063 } 064 catch (Exception ex) 065 { 066 ErrorHandler eh = processor.getContributingModule().getErrorHandler(); 067 068 eh.error( 069 LOG, 070 RulesMessages.readContentFailure(processor, element, ex), 071 element.getLocation(), 072 ex); 073 } 074 075 } 076 077 public String getPropertyName() 078 { 079 return _propertyName; 080 } 081 082 public void setPropertyName(String string) 083 { 084 _propertyName = string; 085 } 086 087 }