org.openeos.services.ui.internal.PostgreSQLDialectBatchUpdateResolver.java Source code

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Here is the source code for org.openeos.services.ui.internal.PostgreSQLDialectBatchUpdateResolver.java

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/**
 * Copyright 2014 Fernando Rincon Martin <frm.rincon@gmail.com>
 *
 * 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 org.openeos.services.ui.internal;

import java.sql.BatchUpdateException;
import java.sql.SQLException;

import org.hibernate.exception.ConstraintViolationException;
import org.hibernate.exception.spi.ConversionContext;

import org.openeos.services.ui.ThrowableToMessageService;
import org.openeos.services.ui.UnencapsulateExceptionResolver;

public class PostgreSQLDialectBatchUpdateResolver extends UnencapsulateExceptionResolver {

    private ConversionContext conversionContext;

    public PostgreSQLDialectBatchUpdateResolver(ThrowableToMessageService throwableToMessageService,
            ConversionContext conversionContext) {
        super(throwableToMessageService);
        this.conversionContext = conversionContext;
    }

    @Override
    protected Throwable unencapsuleThrowable(Throwable t) {
        if (t instanceof ConstraintViolationException) {
            ConstraintViolationException constrainEx = (ConstraintViolationException) t;
            if (constrainEx.getConstraintName() == null) {
                SQLException sqlEx = constrainEx.getSQLException();
                if (sqlEx instanceof BatchUpdateException) {
                    SQLException other = sqlEx.getNextException();
                    if (other != null) {
                        String constraintName = conversionContext.getViolatedConstraintNameExtracter()
                                .extractConstraintName(other);
                        if (constraintName != null) {
                            return new ConstraintViolationException(t.getMessage(), sqlEx, constraintName);
                        }
                    }
                }
            }
        }
        return null;
    }

}