/**
* Licensed to Jasig under one or more contributor license
* agreements. See the NOTICE file distributed with this work
* for additional information regarding copyright ownership.
* Jasig 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:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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();
}
}