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* 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
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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.SetAllowNullToDb;
import org.apache.cayenne.dbsync.merge.token.db.SetColumnTypeToDb;
import org.apache.cayenne.dbsync.merge.token.db.SetGeneratedFlagToDb;
import org.apache.cayenne.dbsync.merge.token.db.SetPrimaryKeyToDb;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
public class HSQLMergerTokenFactory 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 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) {
QuotingStrategy context = adapter.getQuotingStrategy();
return Collections.singletonList("ALTER TABLE " + context.quotedFullyQualifiedName(getEntity())
+ " ALTER COLUMN " + context.quotedName(getColumn()) + " SET NULL");
}
};
}
@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");
}
};
}
@Override
public MergerToken createSetGeneratedFlagToDb(DbEntity entity, DbAttribute column, boolean isGenerated) {
return new SetGeneratedFlagToDb(entity, column, isGenerated) {
@Override
protected void appendAutoIncrement(DbAdapter adapter, StringBuffer builder) {
builder.append("GENERATED BY DEFAULT AS IDENTITY (START WITH 1)");
}
@Override
protected void appendDropAutoIncrement(DbAdapter adapter, StringBuffer builder) {
builder.append("DROP IDENTITY");
}
@Override
public boolean isEmpty() {
return false;
}
};
}
}