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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* 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
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package org.apache.cayenne.dbsync.merge.factory;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.dba.QuotingStrategy;
import org.apache.cayenne.dbsync.merge.token.MergerToken;
import org.apache.cayenne.dbsync.merge.token.db.SetColumnTypeToDb;
import org.apache.cayenne.dbsync.merge.token.db.SetGeneratedFlagToDb;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
public class PostgresMergerTokenFactory extends DefaultMergerTokenFactory {
@Override
public MergerToken createSetColumnTypeToDb(
final DbEntity entity,
DbAttribute columnOriginal,
final DbAttribute columnNew) {
return new SetColumnTypeToDb(entity, columnOriginal, columnNew) {
@Override
protected void appendPrefix(StringBuffer sqlBuffer, QuotingStrategy quotingStrategy) {
// http://www.postgresql.org/docs/8.2/static/sql-altertable.html
sqlBuffer.append("ALTER TABLE ");
sqlBuffer.append(quotingStrategy.quotedFullyQualifiedName(entity));
sqlBuffer.append(" ALTER ");
sqlBuffer.append(quotingStrategy.quotedName(columnNew));
sqlBuffer.append(" TYPE ");
}
};
}
@Override
public MergerToken createSetGeneratedFlagToDb(DbEntity entity, DbAttribute column, boolean isGenerated) {
return new SetGeneratedFlagToDb(entity, column, isGenerated) {
@Override
protected void appendAutoIncrement(DbAdapter adapter, StringBuffer builder) {
throw new UnsupportedOperationException("Can't automatically create new SERIAL in Postgres database. You should do this manually.");
}
@Override
protected void appendDropAutoIncrement(DbAdapter adapter, StringBuffer builder) {
builder.append("SET DEFAULT NULL");
}
@Override
public boolean isEmpty() {
return false;
}
};
}
}