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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
* 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
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package org.apache.cayenne.dba.hsqldb;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.dba.QuotingStrategy;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.merge.MergerFactory;
import org.apache.cayenne.merge.MergerToken;
import org.apache.cayenne.merge.SetAllowNullToDb;
import org.apache.cayenne.merge.SetColumnTypeToDb;
import org.apache.cayenne.merge.SetPrimaryKeyToDb;
public class HSQLMergerFactory extends MergerFactory {
@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 context) {
sqlBuffer.append("ALTER TABLE ");
sqlBuffer.append(context.quotedFullyQualifiedName(entity));
sqlBuffer.append(" ALTER ");
sqlBuffer.append(context.quotedName(columnNew));
sqlBuffer.append(" ");
}
};
}
@Override
public MergerToken createSetAllowNullToDb(DbEntity entity, DbAttribute column) {
return new SetAllowNullToDb(entity, column) {
@Override
public List<String> createSql(DbAdapter adapter) {
StringBuilder sqlBuffer = new StringBuilder();
QuotingStrategy context = adapter.getQuotingStrategy();
sqlBuffer.append("ALTER TABLE ");
sqlBuffer.append(context.quotedFullyQualifiedName(getEntity()));
sqlBuffer.append(" ALTER COLUMN ");
sqlBuffer.append(context.quotedName(getColumn()));
sqlBuffer.append(" NULL");
return Collections.singletonList(sqlBuffer.toString());
}
};
}
@Override
public MergerToken createSetPrimaryKeyToDb(DbEntity entity, Collection<DbAttribute> primaryKeyOriginal,
Collection<DbAttribute> primaryKeyNew, String detectedPrimaryKeyName) {
return new SetPrimaryKeyToDb(entity, primaryKeyOriginal, primaryKeyNew, detectedPrimaryKeyName) {
@Override
protected void appendDropOriginalPrimaryKeySQL(DbAdapter adapter, List<String> sqls) {
sqls.add("ALTER TABLE " + adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity())
+ " DROP PRIMARY KEY");
}
};
}
}