org.hibernate.cfg.reveng.dialect.MySQLMetaDataDialect Maven / Gradle / Ivy
package org.hibernate.cfg.reveng.dialect;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
public class MySQLMetaDataDialect extends JDBCMetaDataDialect {
/**
* Based on info from http://dev.mysql.com/doc/refman/5.0/en/show-table-status.html
* Should work on pre-mysql 5 too since it uses the "old" SHOW TABLE command instead of SELECT from infotable.
*/
public Iterator> getSuggestedPrimaryKeyStrategyName(String catalog, String schema, String table) {
String sql = null;
try {
catalog = caseForSearch( catalog );
schema = caseForSearch( schema );
table = caseForSearch( table );
log.debug("geSuggestedPrimaryKeyStrategyName(" + catalog + "." + schema + "." + table + ")");
sql = "show table status " + (catalog==null?"":" from " + catalog + " ") + (table==null?"":" like '" + table + "' ");
PreparedStatement statement = getConnection().prepareStatement( sql );
final String sc = schema;
final String cat = catalog;
return new ResultSetIterator(statement.executeQuery(), getSQLExceptionConverter()) {
Map element = new HashMap();
protected Map convertRow(ResultSet tableRs) throws SQLException {
element.clear();
element.put("TABLE_NAME", tableRs.getString("NAME"));
element.put("TABLE_SCHEM", sc);
element.put("TABLE_CAT", cat);
String string = tableRs.getString("AUTO_INCREMENT");
if(string==null) {
element.put("HIBERNATE_STRATEGY", null);
} else {
element.put("HIBERNATE_STRATEGY", "identity");
}
return element;
}
protected Throwable handleSQLException(SQLException e) {
// schemaRs and catalogRs are only used for error reporting if
// we get an exception
throw getSQLExceptionConverter().convert( e,
"Could not get list of suggested identity strategies from database. Probably a JDBC driver problem. ", null);
}
};
} catch (SQLException e) {
throw getSQLExceptionConverter().convert(e, "Could not get list of suggested identity strategies from database. Probably a JDBC driver problem. ", sql);
}
}
@Override
public Iterator> getTables(
String xcatalog,
String xschema,
String xtable) {
// MySql JDBC Driver doesn't like 'null' values for the table search pattern, use '%' instead
return super.getTables(xcatalog, xschema, xtable != null ? xtable : "%");
}
public Iterator> getColumns(
String xcatalog,
String xschema,
String xtable,
String xcolumn) {
// MySql JDBC Driver doesn't like 'null' values for the table and column search patterns, use '%' instead
return super.getColumns(
xcatalog,
xschema,
xtable != null ? xtable : "%",
xcolumn != null ? xcolumn : "%");
}
}