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24 package org.objectweb.jalisto.se.impl.meta;
25
26 import org.objectweb.jalisto.se.api.ClassDescription;
27 import org.objectweb.jalisto.se.api.query.FieldDescription;
28 import org.objectweb.jalisto.se.api.query.FielComparator;
29 import org.objectweb.jalisto.se.exception.SchemaException;
30 import org.objectweb.jalisto.se.impl.InFileAddress;
31
32 import java.util.ArrayList  ;
33 import java.util.Iterator ;
34
35 public class ClassDescriptionImpl implements ClassDescription {
36
37 public ClassDescriptionImpl(String fullClassName) {
38 this.className = fullClassName;
39 this.fields = new FieldDescriptionImpl[0];
40 }
41
42 public String getClassName() {
43 return className;
44 }
45
46 public int getIndex(String fieldName) {
47 for (short i = 0; i < fields.length; i++) {
48 if (fields[i].getFieldName().equals(fieldName)) {
49 return i;
50 }
51 }
52 throw new SchemaException("no field with the name " + fieldName + " in class " + className);
53 }
54
55 public FieldDescription getFieldDescription(int index) {
56 return fields[index];
57 }
58
59 public FielComparator getComparator(int index) {
60 return fields[index].getType().getComparator();
61 }
62
63 public boolean isIndexDefined(int index) {
64 return fields[index].isIndexDefined();
65 }
66
67 public InFileAddress getIndexIfa(int index) {
68 return fields[index].getIndexDescription().getValueIndexIfa();
69 }
70
71 public void setIndexIfa(int index, InFileAddress ifa) {
72 fields[index].getIndexDescription().setValueIndexIfa(ifa);
73 }
74
75 public Iterator getIndexedFieldDescription() {
76 ArrayList list = new ArrayList ();
77 for (short i = 0; i < fields.length; i++) {
78 if (fields[i].getIndexDescription().hasIndex()) {
79 list.add(fields[i].getIndexDescription());
80 }
81 }
82 return list.iterator();
83 }
84
85 public short getIndexType(int index) {
86 return fields[index].getIndexDescription().getValueIndexType();
87 }
88
89 public void setIndexType(int index, short indexType) {
90 fields[index].getIndexDescription().setValueIndexType(indexType);
91 }
92
93 public short getNodePageSize(int index) {
94 return fields[index].getIndexDescription().getNodePageSize();
95 }
96
97 public void setNodePageSize(int index, short size) {
98 fields[index].getIndexDescription().setNodePageSize(size);
99 }
100
101 public short getNodeSize(int index) {
102 return fields[index].getIndexDescription().getNodeSize();
103 }
104
105 public void setNodeSize(int index, short size) {
106 fields[index].getIndexDescription().setNodeSize(size);
107 }
108
109 public short getLeafPageSize(int index) {
110 return fields[index].getIndexDescription().getLeafPageSize();
111 }
112
113 public void setLeafPageSize(int index, short size) {
114 fields[index].getIndexDescription().setLeafPageSize(size);
115 }
116
117 public Object getValueFor(String fieldName, Object [] values) {
118 return values[getIndex(fieldName)];
119 }
120
121
126 public String [] getFieldNames() {
127 String [] result = new String [fields.length];
128 for (int i = 0; i < result.length; i++) {
129 result[i] = fields[i].getFieldName();
130 }
131 return result;
132 }
133
134
139 public int getNbrFields() {
140 return fields.length;
141 }
142
143
148 public void addField(FieldDescription fieldDescription) {
149 fieldDescription.setClassMeta(this);
150 FieldDescriptionImpl[] nfd = new FieldDescriptionImpl[fields.length + 1];
151 short index = fieldDescription.getIndex();
152 if (index < 0) {
153 index = (short) fields.length;
154 fieldDescription.setIndex(index);
155 }
156 for (short i = 0; i < nfd.length; i++) {
157 if (i < index) {
158 nfd[i] = fields[i];
159 } else if (i == index) {
160 nfd[i] = (FieldDescriptionImpl) fieldDescription;
161 } else {
162 fields[i - 1].setIndex(i);
163 nfd[i] = fields[i - 1];
164 }
165 }
166 fields = nfd;
167 }
168
169
174 public void removeField(int index) {
175 FieldDescriptionImpl[] nfd = new FieldDescriptionImpl[fields.length - 1];
176 for (short i = 0; i < nfd.length; i++) {
177 if (i < index) {
178 nfd[i] = fields[i];
179 } else {
180 fields[i + 1].setIndex(i);
181 nfd[i] = fields[i + 1];
182 }
183 }
184 fields = nfd;
185 }
186
187 public void updateInBase() {
188 repository.writePersistentClassMetaDescription(this);
189 }
190
191 public void setRepository(InternalMetaRepositoryImpl repository) {
192 this.repository = repository;
193 }
194
195 public String toString() {
196 return className + " with " + fields.length + " fields";
197 }
198
199 public String toStringFull(int nbrTab) {
200 String tab = "";
201 for (int i = 0; i < nbrTab; i++) {
202 tab = tab + "\t";
203 }
204 StringBuffer sb = new StringBuffer ();
205 sb.append(tab).append(className).append("\n");
206 for (int i = 0; i < fields.length; i++) {
207 sb.append(tab).append("\t").append(fields[i]).append("\n");
208 }
209 return sb.toString();
210 }
211
212 public boolean equals(Object o) {
213 try {
214 ClassDescriptionImpl candidate = (ClassDescriptionImpl) o;
215 boolean classTest = candidate.className.equals(this.className);
216 boolean sizeTest = (candidate.fields.length == this.fields.length);
217 if (classTest && sizeTest) {
218 for (int i = 0; i < fields.length; i++) {
219 if (!candidate.fields[i].equals(this.fields[i])) {
220 return false;
221 }
222 }
223 return true;
224 }
225 return false;
226 } catch (Exception e) {
227 }
228 return false;
229 }
230
231 private String className;
232 private FieldDescriptionImpl[] fields;
233 private transient InternalMetaRepositoryImpl repository;
234
235
236 static final long serialVersionUID = -7589377097934761459L;
237 }
238 |
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