com.azaptree.services.security.dao.HashServiceConfigurationDAO.java Source code

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Here is the source code for com.azaptree.services.security.dao.HashServiceConfigurationDAO.java

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package com.azaptree.services.security.dao;

/*
 * #%L
 * AZAPTREE SECURITY SERVICE
 * %%
 * Copyright (C) 2012 - 2013 AZAPTREE.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.
 * #L%
 */

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.UUID;

import org.springframework.dao.IncorrectResultSizeDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.util.Assert;

import com.azaptree.services.domain.entity.dao.DAOException;
import com.azaptree.services.domain.entity.dao.EntityRowMapperSupport;
import com.azaptree.services.domain.entity.dao.JDBCEntityDAOSupport;
import com.azaptree.services.domain.entity.dao.ObjectNotFoundException;
import com.azaptree.services.domain.entity.dao.StaleObjectException;
import com.azaptree.services.security.domain.config.HashServiceConfiguration;
import com.azaptree.services.security.domain.config.impl.HashServiceConfig;

public class HashServiceConfigurationDAO extends JDBCEntityDAOSupport<HashServiceConfiguration>
        implements HashServiceConfigurationRepository {
    private final RowMapper<HashServiceConfiguration> rowMapper = new EntityRowMapperSupport<HashServiceConfiguration>() {

        @Override
        protected HashServiceConfig createEntity(final ResultSet rs, final int rowNum) throws SQLException {
            final String name = rs.getString("name");
            final byte[] privateSalt = rs.getBytes("private_salt");
            final String hashAlgorithm = rs.getString("hash_algorithm");
            final int hashIterations = rs.getInt("hash_iterations");
            final int secureRandomNumberGeneratorNextBytesSize = rs.getInt("secure_rand_next_bytes_size");

            return new HashServiceConfig(name, privateSalt, hashIterations, hashAlgorithm,
                    secureRandomNumberGeneratorNextBytesSize);
        }

        @Override
        protected HashServiceConfiguration mapRow(final HashServiceConfiguration entity, final ResultSet rs,
                final int rowNum) {
            return entity;
        }
    };

    public HashServiceConfigurationDAO(final JdbcTemplate jdbc) {
        super(jdbc, "t_hash_service_config");
    }

    @Override
    public HashServiceConfiguration create(final HashServiceConfiguration entity) {
        Assert.notNull(entity, "entity is required");

        final HashServiceConfig config = new HashServiceConfig(entity);
        config.setEntityId(UUID.randomUUID());

        final String sql = "insert into t_hash_service_config "
                + "(entity_id,name,private_salt,hash_iterations,hash_algorithm,secure_rand_next_bytes_size)"
                + " values (?,?,?,?,?,?)";

        jdbc.update(sql, config.getEntityId(), config.getName(), config.getPrivateSalt(),
                config.getHashIterations(), config.getHashAlgorithmName(),
                config.getSecureRandomNumberGeneratorNextBytesSize());
        return config;
    }

    @Override
    public HashServiceConfiguration findByName(final String name) {
        Assert.hasText(name, "name is required");
        final Object[] args = { name };
        try {
            return jdbc.queryForObject("select * from t_hash_service_config where name = ?", args, rowMapper);
        } catch (final IncorrectResultSizeDataAccessException e) {
            return null;
        }
    }

    @Override
    protected RowMapper<HashServiceConfiguration> getRowMapper() {
        return rowMapper;
    }

    @Override
    protected void initFieldColumnMappings() {
        super.initFieldColumnMappings();
        fieldColumnMappings.put("Name", "name");
        fieldColumnMappings.put("PrivateSalt", "private_salt");
        fieldColumnMappings.put("HashAlgorithmName", "hash_algorithm");
        fieldColumnMappings.put("HashIterations", "hash_iterations");
        fieldColumnMappings.put("SecureRandomNumberGeneratorNextBytesSize", "secure_rand_next_bytes_size");
    }

    @Override
    public UUID lookupIdByName(final String name) {
        Assert.hasText(name, "name is required");
        final Object[] args = { name };
        try {
            return jdbc.queryForObject("select entity_id from t_hash_service_config where name = ?", args,
                    UUID.class);
        } catch (final IncorrectResultSizeDataAccessException e) {
            return null;
        }
    }

    /**
     * HashServiceConfiguration should not be updated once created because other services may depend on hashes that were previously created by the HashService
     * created by the config. For example, HashedCredential matching will depend on using the same HashServiceConfiguration for proper matching.
     * 
     * @throws UnsupportedOperationException
     */
    @Override
    public HashServiceConfiguration update(final HashServiceConfiguration entity)
            throws DAOException, StaleObjectException, ObjectNotFoundException {
        throw new UnsupportedOperationException("HashServiceConfiguration should not be updated once created");
    }

}