Package org.apache.cayenne.access.trans

Source Code of org.apache.cayenne.access.trans.LOBInsertBatchQueryBuilder

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package org.apache.cayenne.access.trans;

import java.util.ArrayList;
import java.util.Iterator;
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.query.BatchQuery;

public class LOBInsertBatchQueryBuilder extends LOBBatchQueryBuilder {

    public LOBInsertBatchQueryBuilder(DbAdapter adapter) {
        super(adapter);
    }

    @Override
    public List getValuesForLOBUpdateParameters(BatchQuery query) {
        List<DbAttribute> dbAttributes = query.getDbAttributes();
        int len = dbAttributes.size();

        List values = new ArrayList(len);
        for (int i = 0; i < len; i++) {
            Object value = query.getValue(i);
            DbAttribute attribute = dbAttributes.get(i);
            if (isUpdateableColumn(value, attribute.getType())) {
                values.add(value);
            }
        }

        return values;
    }

    @Override
    public String createSqlString(BatchQuery batch) {
        List<DbAttribute> dbAttributes = batch.getDbAttributes();

        QuotingStrategy strategy = getAdapter().getQuotingStrategy();

        StringBuffer query = new StringBuffer("INSERT INTO ");
        query.append(strategy.quotedFullyQualifiedName(batch.getDbEntity()));
        query.append(" (");

        for (Iterator<DbAttribute> i = dbAttributes.iterator(); i.hasNext();) {
            DbAttribute attribute = i.next();
            query.append(strategy.quotedName(attribute));
            if (i.hasNext()) {
                query.append(", ");
            }
        }
        query.append(") VALUES (");
        for (int i = 0; i < dbAttributes.size(); i++) {
            if (i > 0) {
                query.append(", ");
            }

            appendUpdatedParameter(query, dbAttributes.get(i), batch.getValue(i));
        }
        query.append(')');
        return query.toString();
    }
}
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