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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
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 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
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 *  KIND, either express or implied.  See the License for the
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package org.apache.cayenne.map;


/**
 * A "synthetic" server-side ObjAttribute used to describe unmapped PK.
 * 
 * @since 3.0
 */
class SyntheticPKObjAttribute extends ObjAttribute {

    SyntheticPKObjAttribute(String name) {
        super(name);
    }

    @Override
    public ObjAttribute getClientAttribute() {
        ClientObjAttribute attribute = new ClientObjAttribute(getName());
        attribute.setType(getType());

        // unconditionally expose DbAttribute path and configure as mandatory.
        attribute.setDbAttributePath(dbAttributePath);
        attribute.setMandatory(true);

        DbAttribute dbAttribute = getDbAttribute();
        if (dbAttribute != null) {
            attribute.setMaxLength(dbAttribute.getMaxLength());
        }

        // TODO: will likely need "userForLocking" property as well.

        return attribute;
    }
    
    @Override
    public boolean isPrimaryKey() {
        return true;
    }
}