org.hibernate.dialect.PostgreSQL82Dialect.java Source code

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Here is the source code for org.hibernate.dialect.PostgreSQL82Dialect.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.dialect;

import org.hibernate.boot.model.TypeContributions;
import org.hibernate.hql.spi.id.IdTableSupportStandardImpl;
import org.hibernate.hql.spi.id.MultiTableBulkIdStrategy;
import org.hibernate.hql.spi.id.local.AfterUseAction;
import org.hibernate.hql.spi.id.local.LocalTemporaryTableBulkIdStrategy;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.type.PostgresUUIDType;

/**
 * An SQL dialect for Postgres 8.2 and later, adds support for "if exists" when dropping tables
 * 
 * @author edalquist
 */
public class PostgreSQL82Dialect extends PostgreSQL81Dialect {
    @Override
    public boolean supportsIfExistsBeforeTableName() {
        return true;
    }

    @Override
    public void contributeTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry) {
        super.contributeTypes(typeContributions, serviceRegistry);

        // HHH-9562
        typeContributions.contributeType(PostgresUUIDType.INSTANCE);
    }

    @Override
    public MultiTableBulkIdStrategy getDefaultMultiTableBulkIdStrategy() {
        return new LocalTemporaryTableBulkIdStrategy(new IdTableSupportStandardImpl() {
            @Override
            public String getCreateIdTableCommand() {
                return "create temporary  table";
            }

            @Override
            public String getDropIdTableCommand() {
                return "drop table";
            }
        }, AfterUseAction.DROP, null);
    }

    @Override
    public String getDropSequenceString(String sequenceName) {
        return "drop sequence if exists " + sequenceName;
    }

    @Override
    public boolean supportsValuesList() {
        return true;
    }

    public boolean supportsRowValueConstructorSyntaxInInList() {
        return true;
    }
}