/**
* Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright ownership. Apereo
* licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
* this file except in compliance with the License. You may obtain a copy of the License at the
* following location:
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.hibernate.tool.hbm2ddl;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.hibernate.HibernateException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.jdbc.spi.SqlExceptionHelper;
import org.hibernate.exception.internal.StandardSQLExceptionConverter;
import org.hibernate.exception.spi.SQLExceptionConverter;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.mapping.Table;
import org.jboss.logging.Logger;
public class FixedDatabaseMetadata extends DatabaseMetadata {
private static final CoreMessageLogger LOG =
Logger.getMessageLogger(CoreMessageLogger.class, DatabaseMetaData.class.getName());
private final Map tables = new HashMap();
private final Set sequences = new HashSet();
private final boolean extras;
private DatabaseMetaData meta;
private SQLExceptionConverter sqlExceptionConverter;
public FixedDatabaseMetadata(Connection connection, Dialect dialect) throws SQLException {
this(connection, dialect, true);
}
public FixedDatabaseMetadata(Connection connection, Dialect dialect, boolean extras)
throws SQLException {
super(connection, dialect, extras);
final StandardSQLExceptionConverter ssec = new StandardSQLExceptionConverter();
ssec.addDelegate(dialect.buildSQLExceptionConversionDelegate());
sqlExceptionConverter = ssec;
meta = connection.getMetaData();
this.extras = extras;
initSequences(connection, dialect);
}
private static final String[] TYPES = {"TABLE", "VIEW"};
public TableMetadata getTableMetadata(
String name, String schema, String catalog, boolean isQuoted)
throws HibernateException {
Object identifier = identifier(catalog, schema, name);
TableMetadata table = (TableMetadata) tables.get(identifier);
if (table != null) {
return table;
} else {
try {
ResultSet rs = null;
try {
if ((isQuoted && meta.storesMixedCaseQuotedIdentifiers())) {
rs = meta.getTables(catalog, schema, name, TYPES);
} else if ((isQuoted && meta.storesUpperCaseQuotedIdentifiers())
|| (!isQuoted && meta.storesUpperCaseIdentifiers())) {
rs =
meta.getTables(
StringHelper.toUpperCase(catalog),
StringHelper.toUpperCase(schema),
StringHelper.toUpperCase(name),
TYPES);
} else if ((isQuoted && meta.storesLowerCaseQuotedIdentifiers())
|| (!isQuoted && meta.storesLowerCaseIdentifiers())) {
rs =
meta.getTables(
StringHelper.toLowerCase(catalog),
StringHelper.toLowerCase(schema),
StringHelper.toLowerCase(name),
TYPES);
} else {
rs = meta.getTables(catalog, schema, name, TYPES);
}
while (rs.next()) {
String tableName = rs.getString("TABLE_NAME");
if (name.equalsIgnoreCase(tableName)) {
table = new TableMetadata(rs, meta, extras);
tables.put(identifier, table);
return table;
}
}
LOG.tableNotFound(name);
return null;
} finally {
if (rs != null) rs.close();
}
} catch (SQLException sqlException) {
throw new SqlExceptionHelper(sqlExceptionConverter)
.convert(sqlException, "could not get table metadata: " + name);
}
}
}
private Object identifier(String catalog, String schema, String name) {
return Table.qualify(catalog, schema, name);
}
private void initSequences(Connection connection, Dialect dialect) throws SQLException {
if (dialect.supportsSequences()) {
String sql = dialect.getQuerySequencesString();
if (sql != null) {
Statement statement = null;
ResultSet rs = null;
try {
statement = connection.createStatement();
rs = statement.executeQuery(sql);
while (rs.next()) {
sequences.add(rs.getString(1).toLowerCase().trim());
}
} finally {
if (rs != null) rs.close();
if (statement != null) statement.close();
}
}
}
}
public boolean isSequence(Object key) {
if (key instanceof String) {
String[] strings = StringHelper.split(".", (String) key);
return sequences.contains(strings[strings.length - 1].toLowerCase());
}
return false;
}
public boolean isTable(Object key) throws HibernateException {
if (key instanceof String) {
Table tbl = new Table((String) key);
if (getTableMetadata(tbl.getName(), tbl.getSchema(), tbl.getCatalog(), tbl.isQuoted())
!= null) {
return true;
} else {
String[] strings = StringHelper.split(".", (String) key);
if (strings.length == 3) {
tbl = new Table(strings[2]);
tbl.setCatalog(strings[0]);
tbl.setSchema(strings[1]);
return getTableMetadata(
tbl.getName(),
tbl.getSchema(),
tbl.getCatalog(),
tbl.isQuoted())
!= null;
} else if (strings.length == 2) {
tbl = new Table(strings[1]);
tbl.setSchema(strings[0]);
return getTableMetadata(
tbl.getName(),
tbl.getSchema(),
tbl.getCatalog(),
tbl.isQuoted())
!= null;
}
}
}
return false;
}
@Override
public String toString() {
return "DatabaseMetadata" + tables.keySet().toString() + sequences.toString();
}
}