public ColumnPairElement getColumnPair(DBIdentifier name) {
ColumnPairElement cpe = (ColumnPairElement) columnPairs.find(name);
if (cpe == null)
try {
String fullName = name.getFullName();
if (fullName == null) {
return null;
}
int pos = fullName.indexOf(";");
String firstHalf = fullName.substring(0, pos);
String secondHalf = fullName.substring(pos + 1);
ColumnElement lce = getColumn(DBIdentifier.create(firstHalf));
pos = secondHalf.lastIndexOf(".");
TableElement te =
((TableElement) element)
.getDeclaringSchema()
.getTable(DBIdentifier.create(secondHalf.substring(0, pos)));
if (te == null) return null;
ColumnElement fce = te.getColumn(DBIdentifier.create(secondHalf));
if (lce == null || fce == null) return null;
ColumnPairElementImpl cpei =
new ColumnPairElementImpl(
lce.getName().getFullName() + ";" + fce.getName().getFullName()); // NOI18N
cpe = new ColumnPairElement(cpei, lce, fce, (TableElement) element);
changeColumnPairs(new ColumnPairElement[] {cpe}, DBElement.Impl.ADD);
} catch (DBException exc) {
exc.printStackTrace();
return null;
}
return cpe;
}
/**
* @param expectRelatedTables specifies whether all related tables are expected to be provided.
*/
private void initFKs(ConnectionProvider cp, String shortTableName, boolean expectRelatedTables)
throws SQLException, DBException {
ResultSet rs;
rs =
cp.getDatabaseMetaData()
.getImportedKeys(cp.getConnection().getCatalog(), cp.getSchema(), shortTableName);
String name, fkColName, pkTableName, pkColName, c1, c2, s1, s2;
if (rs != null) {
HashMap rset = new HashMap();
while (rs.next()) {
// test references between two schemas
c1 = rs.getString("PKTABLE_CAT"); // NOI18N
s1 = rs.getString("PKTABLE_SCHEM"); // NOI18N
c2 = rs.getString("FKTABLE_CAT"); // NOI18N
s2 = rs.getString("FKTABLE_SCHEM"); // NOI18N
name = rs.getString("FK_NAME"); // NOI18N
fkColName = rs.getString("FKCOLUMN_NAME").trim(); // NOI18N
pkTableName = rs.getString("PKTABLE_NAME").trim(); // NOI18N
pkColName = rs.getString("PKCOLUMN_NAME").trim(); // NOI18N
if (comp(c1, c2)) {
if (!comp(s1, s2)) continue;
} else continue;
ColumnPairElement cpe;
if (name == null || name.trim().equals("")) name = "GENERATED_FK_" + pkTableName;
else name = name.trim();
ColumnElement lce = getColumn(DBIdentifier.create(fkColName)); // NOI18N
if (lce == null) // should be null only in same cases when FK is computed for view
continue;
SchemaElement se = ((TableElement) element).getDeclaringSchema();
TableElement fte = se.getTable(DBIdentifier.create(pkTableName));
// table could not be found since all related tables were not necessarily provided
if (fte == null && !expectRelatedTables) {
continue;
}
ColumnElement fce = fte.getColumn(DBIdentifier.create(pkColName));
ColumnPairElementImpl cpei =
new ColumnPairElementImpl(
lce.getName().getFullName() + ";" + fce.getName().getFullName()); // NOI18N
cpe = new ColumnPairElement(cpei, lce, fce, (TableElement) element);
changeColumnPairs(new ColumnPairElement[] {cpe}, DBElement.Impl.ADD);
ForeignKeyElement fk = (ForeignKeyElement) keys.find(DBIdentifier.create(name));
if (fk != null) fk.addColumnPair(cpe); // add pair
else {
ForeignKeyElementImpl fkei = new ForeignKeyElementImpl(this, name);
ForeignKeyElement fke = new ForeignKeyElement(fkei, (TableElement) element);
fke.addColumnPair(cpe);
changeKeys(new ForeignKeyElement[] {fke}, DBElement.Impl.ADD);
}
}
rs.close();
}
}
