1 package org.apache.turbine.services.intake.model;
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22 import org.apache.turbine.services.intake.IntakeException;
23 import org.apache.turbine.services.intake.validator.LongValidator;
24 import org.apache.turbine.services.intake.xmlmodel.XmlField;
25
26 /***
27 * Processor for long fields.
28 *
29 * @author <a href="mailto:jmcnally@collab.net>John McNally</a>
30 * @author <a href="mailto:Colin.Chalmers@maxware.nl">Colin Chalmers</a>
31 * @version $Id: LongField.java 646752 2008-04-10 10:56:15Z tv $
32 */
33 public class LongField
34 extends Field
35 {
36
37 /***
38 * Constructor.
39 *
40 * @param field xml field definition object
41 * @param group xml group definition object
42 * @throws IntakeException thrown by superclass
43 */
44 public LongField(XmlField field, Group group)
45 throws IntakeException
46 {
47 super(field, group);
48 }
49
50 /***
51 * Sets the default value for an Long Field
52 *
53 * @param prop Parameter for the default values
54 */
55 public void setDefaultValue(String prop)
56 {
57 defaultValue = null;
58
59 if (prop == null)
60 {
61 return;
62 }
63
64 defaultValue = new Long(prop);
65 }
66
67 /***
68 * Set the empty Value. This value is used if Intake
69 * maps a field to a parameter returned by the user and
70 * the corresponding field is either empty (empty string)
71 * or non-existant.
72 *
73 * @param prop The value to use if the field is empty.
74 */
75 public void setEmptyValue(String prop)
76 {
77 emptyValue = null;
78
79 if (prop == null)
80 {
81 return;
82 }
83
84 emptyValue = new Long(prop);
85 }
86
87 /***
88 * Provides access to emptyValue such that the value returned will be
89 * acceptable as an argument parameter to Method.invoke. Subclasses
90 * that deal with primitive types should ensure that they return an
91 * appropriate value wrapped in the object wrapper class for the
92 * primitive type.
93 *
94 * @return the value to use when the field is empty or an Object that
95 * wraps the empty value for primitive types.
96 */
97 protected Object getSafeEmptyValue()
98 {
99 if (isMultiValued)
100 {
101 return new long[0];
102 }
103 else
104 {
105 return (null == getEmptyValue()) ? new Long(0l) : getEmptyValue();
106 }
107 }
108
109 /***
110 * A suitable validator.
111 *
112 * @return A suitable validator
113 */
114 protected String getDefaultValidator()
115 {
116 return LongValidator.class.getName();
117 }
118
119 /***
120 * Sets the value of the field from data in the parser.
121 */
122 protected void doSetValue()
123 {
124 if (isMultiValued)
125 {
126 Long[] inputs = parser.getLongObjects(getKey());
127 long[] values = new long[inputs.length];
128
129 for (int i = 0; i < inputs.length; i++)
130 {
131 values[i] = inputs[i] == null
132 ? ((Long) getEmptyValue()).longValue()
133 : inputs[i].longValue();
134 }
135
136 setTestValue(values);
137 }
138 else
139 {
140 setTestValue(parser.getLongObject(getKey(), (Long)getEmptyValue()));
141 }
142 }
143 }