Package org.apache.cayenne.dba.hsqldb

Source Code of org.apache.cayenne.dba.hsqldb.HSQLSelectTranslator

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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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package org.apache.cayenne.dba.hsqldb;

import org.apache.cayenne.access.trans.SelectTranslator;
import org.apache.cayenne.query.QueryMetadata;

/**
* @since 1.2
*/
class HSQLSelectTranslator extends SelectTranslator {

    @Override
    protected void appendLimitAndOffsetClauses(StringBuilder buffer) {
        QueryMetadata metadata = getQuery().getMetaData(getEntityResolver());
        int offset = metadata.getFetchOffset();
        int limit = metadata.getFetchLimit();

        if (offset > 0 || limit > 0) {
            buffer.append(" LIMIT ");

            // both OFFSET and LIMIT must be present, so come up with defaults if one of
            // them is not set by the user
            if (limit == 0) {
                limit = Integer.MAX_VALUE;
            }

            buffer.append(limit).append(" OFFSET ").append(offset);
        }
    }
}
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