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.FloatValidator; 024 import org.apache.fulcrum.intake.xmlmodel.XmlField; 025 026 /** 027 * Processor for float fields. 028 * 029 * @author <a href="mailto:tv@apache.org">Thomas Vandahl</a> 030 * @version $Id: FloatField.java 663702 2008-06-05 19:01:36Z tv $ 031 */ 032 public class FloatField 033 extends Field 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 FloatField(XmlField field, Group group) 043 throws IntakeException 044 { 045 super(field, group); 046 } 047 048 /** 049 * Sets the default value for an Float 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 Float(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 Double(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 float[0]; 100 } 101 else 102 { 103 return (null == getEmptyValue()) 104 ? new Float(0.0) : getEmptyValue(); 105 } 106 } 107 108 /** 109 * A suitable validator. 110 * 111 * @return A suitable validator 112 */ 113 protected String getDefaultValidator() 114 { 115 return FloatValidator.class.getName(); 116 } 117 118 /** 119 * Sets the value of the field from data in the parser. 120 */ 121 protected void doSetValue() 122 { 123 if (isMultiValued) 124 { 125 Float[] inputs = parser.getFloatObjects(getKey()); 126 float[] values = new float[inputs.length]; 127 128 for (int i = 0; i < inputs.length; i++) 129 { 130 values[i] = inputs[i] == null 131 ? ((Float) getEmptyValue()).floatValue() 132 : inputs[i].floatValue(); 133 } 134 135 setTestValue(values); 136 } 137 else 138 { 139 setTestValue(parser.getFloatObject(getKey(), (Float)getEmptyValue())); 140 } 141 } 142 143 }