@Override
public List<ForeignKey> getAdditionalForeignKeys(String schemaName, Database database)
throws DatabaseException {
List<ForeignKey> foreignKeys = super.getAdditionalForeignKeys(schemaName, database);
// Setting default schema name. Needed for correct statement generation
if (schemaName == null) {
schemaName = database.convertRequestedSchemaToSchema(schemaName);
}
// Create SQL statement to select all FKs in database which referenced to unique columns
String query =
"select uc_fk.constraint_name FK_NAME,uc_fk.owner FKTABLE_SCHEM,ucc_fk.table_name FKTABLE_NAME,ucc_fk.column_name FKCOLUMN_NAME,decode(uc_fk.deferrable, 'DEFERRABLE', 5 ,'NOT DEFERRABLE', 7 , 'DEFERRED', 6 ) DEFERRABILITY, decode(uc_fk.delete_rule, 'CASCADE', 0,'NO ACTION', 3) DELETE_RULE,ucc_rf.table_name PKTABLE_NAME,ucc_rf.column_name PKCOLUMN_NAME from all_cons_columns ucc_fk,all_constraints uc_fk,all_cons_columns ucc_rf,all_constraints uc_rf where uc_fk.CONSTRAINT_NAME = ucc_fk.CONSTRAINT_NAME and uc_fk.constraint_type='R' and uc_fk.r_constraint_name=ucc_rf.CONSTRAINT_NAME and uc_rf.constraint_name = ucc_rf.constraint_name and uc_rf.constraint_type = 'U' and uc_fk.owner = '"
+ schemaName
+ "' and ucc_fk.owner = '"
+ schemaName
+ "' and uc_rf.owner = '"
+ schemaName
+ "' and ucc_rf.owner = '"
+ schemaName
+ "'";
Statement statement = null;
ResultSet rs = null;
try {
statement =
((JdbcConnection) database.getConnection()).getUnderlyingConnection().createStatement();
rs = statement.executeQuery(query);
while (rs.next()) {
ForeignKeyInfo fkInfo = new ForeignKeyInfo();
fkInfo.setReferencesUniqueColumn(true);
fkInfo.setFkName(convertFromDatabaseName(rs.getString("FK_NAME")));
fkInfo.setFkSchema(convertFromDatabaseName(rs.getString("FKTABLE_SCHEM")));
fkInfo.setFkTableName(convertFromDatabaseName(rs.getString("FKTABLE_NAME")));
fkInfo.setFkColumn(convertFromDatabaseName(rs.getString("FKCOLUMN_NAME")));
fkInfo.setPkTableName(convertFromDatabaseName(rs.getString("PKTABLE_NAME")));
fkInfo.setPkColumn(convertFromDatabaseName(rs.getString("PKCOLUMN_NAME")));
fkInfo.setDeferrablility(rs.getShort("DEFERRABILITY"));
ForeignKeyConstraintType deleteRule =
convertToForeignKeyConstraintType(rs.getInt("DELETE_RULE"));
if (rs.wasNull()) {
deleteRule = null;
}
fkInfo.setDeleteRule(deleteRule);
foreignKeys.add(generateForeignKey(fkInfo, database, foreignKeys));
}
} catch (SQLException e) {
throw new DatabaseException(
"Can't execute selection query to generate list of foreign keys", e);
} finally {
JdbcUtils.closeResultSet(rs);
JdbcUtils.closeStatement(statement);
}
return foreignKeys;
}
@Override
protected void readPrimaryKeys(
DatabaseSnapshot snapshot, String schema, DatabaseMetaData databaseMetaData)
throws DatabaseException, SQLException {
Database database = snapshot.getDatabase();
updateListeners("Reading primary keys for " + database.toString() + " ...");
// we can't add directly to the this.primaryKeys hashSet because adding columns to an exising PK
// changes the hashCode and .contains() fails
List<PrimaryKey> foundPKs = new ArrayList<PrimaryKey>();
// Setting default schema name. Needed for correct statement generation
if (schema == null) schema = database.convertRequestedSchemaToSchema(schema);
String query =
"select uc.table_name TABLE_NAME,ucc.column_name COLUMN_NAME,ucc.position KEY_SEQ,uc.constraint_name PK_NAME,ui.tablespace_name TABLESPACE from all_constraints uc,all_indexes ui,all_cons_columns ucc where uc.constraint_type = 'P' 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
+ "' and uc.table_name = ui.table_name and ui.table_name = ucc.table_name";
Statement statement = null;
ResultSet rs = null;
try {
statement =
((JdbcConnection) database.getConnection()).getUnderlyingConnection().createStatement();
rs = statement.executeQuery(query);
while (rs.next()) {
String tableName = convertFromDatabaseName(rs.getString("TABLE_NAME"));
String tablespace = convertFromDatabaseName(rs.getString("TABLESPACE"));
String columnName = convertFromDatabaseName(rs.getString("COLUMN_NAME"));
short position = rs.getShort("KEY_SEQ");
boolean foundExistingPK = false;
for (PrimaryKey pk : foundPKs) {
if (pk.getTable().getName().equals(tableName)) {
pk.addColumnName(position - 1, columnName);
foundExistingPK = true;
}
}
if (!foundExistingPK && !database.isLiquibaseTable(tableName)) {
PrimaryKey primaryKey = new PrimaryKey();
primaryKey.setTablespace(tablespace);
Table table = snapshot.getTable(tableName);
if (table == null) {
continue; // probably a different schema
}
primaryKey.setTable(table);
primaryKey.addColumnName(position - 1, columnName);
primaryKey.setName(convertPrimaryKeyName(rs.getString("PK_NAME")));
foundPKs.add(primaryKey);
}
}
} finally {
JdbcUtils.closeResultSet(rs);
JdbcUtils.closeStatement(statement);
}
snapshot.getPrimaryKeys().addAll(foundPKs);
}
@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);
}
}
}
}
