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* to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.dba.openbase;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.cayenne.dba.DbAdapter;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbJoin;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.merge.CreateTableToDb;
import org.apache.cayenne.merge.DropRelationshipToDb;
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.SetNotNullToDb;
public class OpenBaseMergerFactory extends MergerFactory {
@Override
public MergerToken createCreateTableToDb(DbEntity entity) {
return new CreateTableToDb(entity) {
@Override
public List<String> createSql(DbAdapter adapter) {
List<String> sqls = new ArrayList<String>();
// create table first as OpenBase adapter created primary key in its
// getPkGenerator().createAutoPkStatements
sqls.add(adapter.createTable(getEntity()));
sqls.addAll(adapter.getPkGenerator().createAutoPkStatements(
Collections.singletonList(getEntity())));
return sqls;
}
};
}
@Override
public MergerToken createDropRelationshipToDb(
final DbEntity entity,
final DbRelationship rel) {
return new DropRelationshipToDb(entity, rel) {
@Override
public List<String> createSql(DbAdapter adapter) {
StringBuilder buf = new StringBuilder();
buf.append("delete from _SYS_RELATIONSHIP where ");
// FK_NAME form jdbc metadata seem to be wrong. It contain a column name
// and not the 'relationshipName'
// TODO: tell openbase developer mail list
DbEntity source = getEntity();
DbEntity dest = (DbEntity) rel.getTargetEntity();
// only use the first. See adapter
// TODO: can we be sure this is the first and same as used by the adapter?
DbJoin join = rel.getJoins().get(0);
// see comment in adapter for why source and dest is switched around..
buf.append(" source_table = '");
buf.append(dest.getFullyQualifiedName());
buf.append("'");
buf.append(" and source_column = '");
buf.append(join.getTargetName());
buf.append("'");
buf.append(" and dest_table = '");
buf.append(source.getFullyQualifiedName());
buf.append("'");
buf.append(" and dest_column = '");
buf.append(join.getSourceName());
buf.append("'");
return Collections.singletonList(buf.toString());
}
};
}
@Override
public MergerToken createSetColumnTypeToDb(
final DbEntity entity,
final DbAttribute columnOriginal,
final DbAttribute columnNew) {
return new SetColumnTypeToDb(entity, columnOriginal, columnNew) {
@Override
public List<String> createSql(DbAdapter adapter) {
List<String> sqls = new ArrayList<String>();
if (columnOriginal.getMaxLength() != columnNew.getMaxLength()) {
sqls.add("ALTER TABLE "
+ entity.getFullyQualifiedName()
+ " COLUMN "
+ columnNew.getName()
+ " SET LENGTH "
+ columnNew.getMaxLength());
}
return sqls;
}
};
}
@Override
public MergerToken createSetNotNullToDb(DbEntity entity, DbAttribute column) {
return new SetNotNullToDb(entity, column) {
@Override
public List<String> createSql(DbAdapter adapter) {
StringBuilder sqlBuffer = new StringBuilder();
sqlBuffer.append("ALTER TABLE ");
sqlBuffer.append(getEntity().getFullyQualifiedName());
sqlBuffer.append(" COLUMN ");
sqlBuffer.append(getColumn().getName());
sqlBuffer.append(" SET NOT NULL");
return Collections.singletonList(sqlBuffer.toString());
}
};
}
@Override
public MergerToken createSetAllowNullToDb(DbEntity entity, DbAttribute column) {
return new SetAllowNullToDb(entity, column) {
@Override
public List<String> createSql(DbAdapter adapter) {
StringBuilder sqlBuffer = new StringBuilder();
sqlBuffer.append("ALTER TABLE ");
sqlBuffer.append(getEntity().getFullyQualifiedName());
sqlBuffer.append(" COLUMN ");
sqlBuffer.append(getColumn().getName());
sqlBuffer.append(" SET NULL");
return Collections.singletonList(sqlBuffer.toString());
}
};
}
}