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/*
* Copyright 2011 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.data.util.sqlcontainer;
import java.io.Serializable;
/**
* The reference class represents a simple [usually foreign key] reference to
* another SQLContainer. Actual foreign key reference in the database is not
* required, but it is recommended to make sure that certain constraints are
* followed.
*/
@SuppressWarnings("serial")
class Reference implements Serializable {
/**
* The SQLContainer that this reference points to.
*/
private SQLContainer referencedContainer;
/**
* The column ID/name in the referencing SQLContainer that contains the key
* used for the reference.
*/
private String referencingColumn;
/**
* The column ID/name in the referenced SQLContainer that contains the key
* used for the reference.
*/
private String referencedColumn;
/**
* Constructs a new reference to be used within the SQLContainer to
* reference another SQLContainer.
*/
Reference(SQLContainer referencedContainer, String referencingColumn,
String referencedColumn) {
this.referencedContainer = referencedContainer;
this.referencingColumn = referencingColumn;
this.referencedColumn = referencedColumn;
}
SQLContainer getReferencedContainer() {
return referencedContainer;
}
String getReferencingColumn() {
return referencingColumn;
}
String getReferencedColumn() {
return referencedColumn;
}
}
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