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56 package org.objectstyle.cayenne.modeler.dialog;
57
58 import java.util.ArrayList  ;
59
60 import org.objectstyle.cayenne.map.DbEntity;
61 import org.objectstyle.cayenne.map.DbJoin;
62 import org.objectstyle.cayenne.map.DbRelationship;
63 import org.objectstyle.cayenne.modeler.ProjectController;
64 import org.objectstyle.cayenne.modeler.util.CayenneTableModel;
65
66
70 public class DbJoinTableModel extends CayenneTableModel {
71
72 static final int SOURCE = 0;
74 static final int TARGET = 1;
75
76 protected DbRelationship relationship;
77 protected DbEntity source;
78 protected DbEntity target;
79
80
81 private boolean editable;
82
83 public DbJoinTableModel(
84 DbRelationship relationship,
85 ProjectController mediator,
86 Object src) {
87
88 super(mediator, src, new ArrayList (relationship.getJoins()));
89 this.relationship = relationship;
90 this.source = (DbEntity) relationship.getSourceEntity();
91 this.target = (DbEntity) relationship.getTargetEntity();
92 }
93
94 public DbJoinTableModel(
95 DbRelationship relationship,
96 ProjectController mediator,
97 Object src,
98 boolean editable) {
99
100 this(relationship, mediator, src);
101 this.editable = editable;
102 }
103
104 public Class getElementsClass() {
105 return DbJoin.class;
106 }
107
108
109 public void commit() {
110 relationship.setJoins(getObjectList());
111 }
112
113
116 public String getOrderingKey() {
117 return null;
118 }
119
120 public int getColumnCount() {
121 return 2;
122 }
123
124 public String getColumnName(int column) {
125 if (column == SOURCE)
126 return "Source";
127 else if (column == TARGET)
128 return "Target";
129 else
130 return "";
131 }
132
133 public DbJoin getJoin(int row) {
134 return (row >= 0 && row < objectList.size())
135 ? (DbJoin) objectList.get(row)
136 : null;
137 }
138
139 public Object getValueAt(int row, int column) {
140 DbJoin join = getJoin(row);
141 if (join == null) {
142 return null;
143 }
144
145 if (column == SOURCE) {
146 return join.getSourceName();
147 }
148 else if (column == TARGET) {
149 return join.getTargetName();
150 }
151 else {
152 return null;
153 }
154
155 }
156
157 public void setUpdatedValueAt(Object aValue, int row, int column) {
158 DbJoin join = getJoin(row);
159 if (join == null) {
160 return;
161 }
162
163 String value = (String ) aValue;
164 if (column == SOURCE) {
165 if (source == null || source.getAttribute(value) == null) {
166 value = null;
167 }
168
169 join.setSourceName(value);
170 }
171 else if (column == TARGET) {
172 if (target == null || target.getAttribute(value) == null) {
173 value = null;
174 }
175
176 join.setTargetName(value);
177 }
178
179 fireTableRowsUpdated(row, row);
180 }
181
182 public boolean isCellEditable(int row, int col) {
183 if (col == SOURCE) {
184 return relationship.getSourceEntity() != null && editable;
185 }
186 else if (col == TARGET) {
187 return relationship.getTargetEntity() != null && editable;
188 }
189
190 return false;
191 }
192 }
193 |
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