org.hibernate.mapping.UniqueKey.java Source code

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Here is the source code for org.hibernate.mapping.UniqueKey.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.mapping;

import java.util.HashMap;
import java.util.Map;

import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.Mapping;
import org.hibernate.internal.util.StringHelper;

/**
 * A relational unique key constraint
 *
 * @author Brett Meyer
 */
public class UniqueKey extends Constraint {
    private java.util.Map<Column, String> columnOrderMap = new HashMap<Column, String>();

    @Override
    public String sqlConstraintString(Dialect dialect, String constraintName, String defaultCatalog,
            String defaultSchema) {
        //      return dialect.getUniqueDelegate().uniqueConstraintSql( this );
        // Not used.
        return "";
    }

    @Override
    public String sqlCreateString(Dialect dialect, Mapping p, String defaultCatalog, String defaultSchema) {
        return null;
        //      return dialect.getUniqueDelegate().getAlterTableToAddUniqueKeyCommand(
        //            this, defaultCatalog, defaultSchema
        //      );
    }

    @Override
    public String sqlDropString(Dialect dialect, String defaultCatalog, String defaultSchema) {
        return null;
        //      return dialect.getUniqueDelegate().getAlterTableToDropUniqueKeyCommand(
        //            this, defaultCatalog, defaultSchema
        //      );
    }

    public void addColumn(Column column, String order) {
        addColumn(column);
        if (StringHelper.isNotEmpty(order)) {
            columnOrderMap.put(column, order);
        }
    }

    public Map<Column, String> getColumnOrderMap() {
        return columnOrderMap;
    }

    public String generatedConstraintNamePrefix() {
        return "UK_";
    }

    @Override
    public String getExportIdentifier() {
        return StringHelper.qualify(getTable().getExportIdentifier(), "UK-" + getName());
    }
}