protected void getColumnsForUniqueConstraint(
Connection jdbcConnection, UniqueConstraint constraint, String schema) throws SQLException {
PreparedStatement stmt = null;
ResultSet rs = null;
try {
stmt =
jdbcConnection.prepareStatement(
"select ucc.column_name from all_cons_columns ucc where ucc.constraint_name=? and ucc.owner=? order by ucc.position");
stmt.setString(1, constraint.getName());
stmt.setString(2, schema);
rs = stmt.executeQuery();
while (rs.next()) {
String columnName = rs.getString("column_name");
constraint.getColumns().add(columnName);
}
} finally {
if (rs != null) {
try {
rs.close();
} catch (SQLException ignored) {
}
}
if (stmt != null) stmt.close();
}
}
@Override
protected void readUniqueConstraints(
DatabaseSnapshot snapshot, String schema, DatabaseMetaData databaseMetaData)
throws DatabaseException, SQLException {
Database database = snapshot.getDatabase();
updateListeners("Reading unique constraints for " + database.toString() + " ...");
List<UniqueConstraint> foundUC = new ArrayList<UniqueConstraint>();
Connection jdbcConnection =
((JdbcConnection) database.getConnection()).getUnderlyingConnection();
PreparedStatement statement = null;
ResultSet rs = null;
// Setting default schema name. Needed for correct statement generation
if (schema == null) schema = database.convertRequestedSchemaToSchema(schema);
try {
String query =
"select uc.constraint_name,uc.table_name,uc.status,uc.deferrable,uc.deferred,ui.tablespace_name from all_constraints uc, all_cons_columns ucc, all_indexes ui where uc.constraint_type='U' and uc.index_name = ui.index_name and uc.constraint_name = ucc.constraint_name and uc.owner = '"
+ schema
+ "' and ui.table_owner = '"
+ schema
+ "' and ucc.owner = '"
+ schema
+ "'";
statement = jdbcConnection.prepareStatement(query);
rs = statement.executeQuery();
while (rs.next()) {
String constraintName = rs.getString("constraint_name");
String tableName = rs.getString("table_name");
String status = rs.getString("status");
String deferrable = rs.getString("deferrable");
String deferred = rs.getString("deferred");
String tablespace = rs.getString("tablespace_name");
UniqueConstraint constraintInformation = new UniqueConstraint();
constraintInformation.setName(constraintName);
constraintInformation.setTablespace(tablespace);
if (!database.isSystemTable(null, schema, tableName)
&& !database.isLiquibaseTable(tableName)) {
Table table = snapshot.getTable(tableName);
if (table == null) {
continue; // probably different schema
}
constraintInformation.setTable(table);
constraintInformation.setDisabled("DISABLED".equals(status));
if ("DEFERRABLE".equals(deferrable)) {
constraintInformation.setDeferrable(true);
constraintInformation.setInitiallyDeferred("DEFERRED".equals(deferred));
}
getColumnsForUniqueConstraint(jdbcConnection, constraintInformation, schema);
foundUC.add(constraintInformation);
}
}
snapshot.getUniqueConstraints().addAll(foundUC);
} finally {
try {
rs.close();
} catch (SQLException ignored) {
}
if (statement != null) {
statement.close();
}
}
}
@Override
protected void readIndexes(
DatabaseSnapshot snapshot, String schema, DatabaseMetaData databaseMetaData)
throws DatabaseException, SQLException {
Database database = snapshot.getDatabase();
updateListeners("Reading indexes for " + database.toString() + " ...");
String query =
"select aic.index_name, 3 AS TYPE, aic.table_name, aic.column_name, aic.column_position AS ORDINAL_POSITION, null AS FILTER_CONDITION, ai.tablespace_name AS TABLESPACE, ai.uniqueness FROM all_ind_columns aic, all_indexes ai WHERE aic.table_owner='"
+ database.convertRequestedSchemaToSchema(schema)
+ "' and aic.index_name = ai.index_name ORDER BY INDEX_NAME, ORDINAL_POSITION";
Statement statement = null;
ResultSet rs = null;
Map<String, Index> indexMap = null;
try {
statement =
((JdbcConnection) database.getConnection()).getUnderlyingConnection().createStatement();
rs = statement.executeQuery(query);
indexMap = new HashMap<String, Index>();
while (rs.next()) {
String indexName = convertFromDatabaseName(rs.getString("INDEX_NAME"));
String tableName = rs.getString("TABLE_NAME");
String tableSpace = rs.getString("TABLESPACE");
String columnName = convertFromDatabaseName(rs.getString("COLUMN_NAME"));
if (columnName == null) {
// nothing to index, not sure why these come through sometimes
continue;
}
short type = rs.getShort("TYPE");
boolean nonUnique;
String uniqueness = rs.getString("UNIQUENESS");
if ("UNIQUE".equals(uniqueness)) {
nonUnique = false;
} else {
nonUnique = true;
}
short position = rs.getShort("ORDINAL_POSITION");
String filterCondition = rs.getString("FILTER_CONDITION");
if (type == DatabaseMetaData.tableIndexStatistic) {
continue;
}
Index index;
if (indexMap.containsKey(indexName)) {
index = indexMap.get(indexName);
} else {
index = new Index();
Table table = snapshot.getTable(tableName);
if (table == null) {
continue; // probably different schema
}
index.setTable(table);
index.setTablespace(tableSpace);
index.setName(indexName);
index.setUnique(!nonUnique);
index.setFilterCondition(filterCondition);
indexMap.put(indexName, index);
}
for (int i = index.getColumns().size(); i < position; i++) {
index.getColumns().add(null);
}
index.getColumns().set(position - 1, columnName);
}
} finally {
JdbcUtils.closeResultSet(rs);
JdbcUtils.closeStatement(statement);
}
for (Map.Entry<String, Index> entry : indexMap.entrySet()) {
snapshot.getIndexes().add(entry.getValue());
}
/*
* marks indexes as "associated with" instead of "remove it"
* Index should have associations with:
* foreignKey, primaryKey or uniqueConstraint
* */
for (Index index : snapshot.getIndexes()) {
for (PrimaryKey pk : snapshot.getPrimaryKeys()) {
if (index.getTable().getName().equalsIgnoreCase(pk.getTable().getName())
&& index.getColumnNames().equals(pk.getColumnNames())) {
index.addAssociatedWith(Index.MARK_PRIMARY_KEY);
}
}
for (ForeignKey fk : snapshot.getForeignKeys()) {
if (index.getTable().getName().equalsIgnoreCase(fk.getForeignKeyTable().getName())
&& index.getColumnNames().equals(fk.getForeignKeyColumns())) {
index.addAssociatedWith(Index.MARK_FOREIGN_KEY);
}
}
for (UniqueConstraint uc : snapshot.getUniqueConstraints()) {
if (index.getTable().getName().equalsIgnoreCase(uc.getTable().getName())
&& index.getColumnNames().equals(uc.getColumnNames())) {
index.addAssociatedWith(Index.MARK_UNIQUE_CONSTRAINT);
}
}
}
}
