001 package org.apache.fulcrum.intake.model; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022 import org.apache.fulcrum.intake.IntakeException; 023 import org.apache.fulcrum.intake.validator.LongValidator; 024 import org.apache.fulcrum.intake.xmlmodel.XmlField; 025 026 /** 027 * Processor for long fields. 028 * 029 * @version $Id: LongField.java 663702 2008-06-05 19:01:36Z tv $ 030 */ 031 public class LongField 032 extends Field 033 { 034 035 /** 036 * Constructor. 037 * 038 * @param field xml field definition object 039 * @param group xml group definition object 040 * @throws IntakeException thrown by superclass 041 */ 042 public LongField(XmlField field, Group group) 043 throws IntakeException 044 { 045 super(field, group); 046 } 047 048 /** 049 * Sets the default value for an Long Field 050 * 051 * @param prop Parameter for the default values 052 */ 053 public void setDefaultValue(String prop) 054 { 055 defaultValue = null; 056 057 if (prop == null) 058 { 059 return; 060 } 061 062 defaultValue = new Long(prop); 063 } 064 065 /** 066 * Set the empty Value. This value is used if Intake 067 * maps a field to a parameter returned by the user and 068 * the corresponding field is either empty (empty string) 069 * or non-existant. 070 * 071 * @param prop The value to use if the field is empty. 072 */ 073 public void setEmptyValue(String prop) 074 { 075 emptyValue = null; 076 077 if (prop == null) 078 { 079 return; 080 } 081 082 emptyValue = new Long(prop); 083 } 084 085 /** 086 * Provides access to emptyValue such that the value returned will be 087 * acceptable as an argument parameter to Method.invoke. Subclasses 088 * that deal with primitive types should ensure that they return an 089 * appropriate value wrapped in the object wrapper class for the 090 * primitive type. 091 * 092 * @return the value to use when the field is empty or an Object that 093 * wraps the empty value for primitive types. 094 */ 095 protected Object getSafeEmptyValue() 096 { 097 if (isMultiValued) 098 { 099 return new long[0]; 100 } 101 else 102 { 103 return (null == getEmptyValue()) ? new Long(0l) : getEmptyValue(); 104 } 105 } 106 107 /** 108 * A suitable validator. 109 * 110 * @return A suitable validator 111 */ 112 protected String getDefaultValidator() 113 { 114 return LongValidator.class.getName(); 115 } 116 117 /** 118 * Sets the value of the field from data in the parser. 119 */ 120 protected void doSetValue() 121 { 122 if (isMultiValued) 123 { 124 Long[] inputs = parser.getLongObjects(getKey()); 125 long[] values = new long[inputs.length]; 126 127 for (int i = 0; i < inputs.length; i++) 128 { 129 values[i] = inputs[i] == null 130 ? ((Long) getEmptyValue()).longValue() 131 : inputs[i].longValue(); 132 } 133 134 setTestValue(values); 135 } 136 else 137 { 138 setTestValue(parser.getLongObject(getKey(), (Long)getEmptyValue())); 139 } 140 } 141 }