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jpx.jdbc/src/main/java/io/jenetics/jpx/jdbc/MetadataDAO.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Java Genetic Algorithm Library (@__identifier__@). | ||
| * Copyright (c) @__year__@ Franz Wilhelmstötter | ||
| * | ||
| * 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. | ||
| * | ||
| * Author: | ||
| * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at) | ||
| */ | ||
| package io.jenetics.jpx.jdbc; | ||
|
|
||
| import static java.util.Arrays.asList; | ||
| import static java.util.stream.Collectors.toMap; | ||
|
|
||
| import java.sql.Connection; | ||
| import java.sql.SQLException; | ||
| import java.time.ZonedDateTime; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
||
| import io.jenetics.jpx.Bounds; | ||
| import io.jenetics.jpx.Copyright; | ||
| import io.jenetics.jpx.Link; | ||
| import io.jenetics.jpx.Metadata; | ||
| import io.jenetics.jpx.Person; | ||
|
|
||
| /** | ||
| * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a> | ||
| * @version !__version__! | ||
| * @since !__version__! | ||
| */ | ||
| public class MetadataDAO extends DAO { | ||
|
|
||
| /** | ||
| * Represents a row in the "metadata" tables. | ||
| */ | ||
| private static final class Row { | ||
| final String name; | ||
| final String description; | ||
| final Long personID; | ||
| final Long copyrightID; | ||
| final ZonedDateTime time; | ||
| final String keywords; | ||
| final Long boundsID; | ||
|
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| Row( | ||
| final String name, | ||
| final String description, | ||
| final Long personID, | ||
| final Long copyrightID, | ||
| final ZonedDateTime time, | ||
| final String keywords, | ||
| final Long boundsID | ||
| ) { | ||
| this.name = name; | ||
| this.description = description; | ||
| this.personID = personID; | ||
| this.copyrightID = copyrightID; | ||
| this.time = time; | ||
| this.keywords = keywords; | ||
| this.boundsID = boundsID; | ||
| } | ||
| } | ||
|
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|
|
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| public MetadataDAO(final Connection connection) { | ||
| super(connection); | ||
| } | ||
|
|
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| /** | ||
| * The link row parser which creates a {@link Link} object from a given DB | ||
| * row. | ||
| */ | ||
| private static final RowParser<Stored<Row>> RowParser = rs -> Stored.of( | ||
| rs.getLong("id"), | ||
| new Row( | ||
| rs.getString("name"), | ||
| rs.getString("desc"), | ||
| rs.get(Long.class, "person_id"), | ||
| rs.get(Long.class, "copyright_id"), | ||
| rs.getZonedDateTime("time"), | ||
| rs.getString("keywords"), | ||
| rs.get(Long.class, "bounds_id") | ||
| ) | ||
| ); | ||
|
|
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| /* | ||
| CREATE TABLE metadata( | ||
| id BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT, | ||
| name VARCHAR(255), | ||
| `desc` TEXT, | ||
| person_id BIGINT REFERENCES person(id), | ||
| copyright_id BIGINT, | ||
| time TIMESTAMP, | ||
| keywords VARCHAR(255), | ||
| bounds_id BIGINT REFERENCES bounds(id) | ||
| ); | ||
| CREATE INDEX i_metadata_name ON metadata(name); | ||
| CREATE INDEX i_metadata_keywords ON metadata(keywords); | ||
| CREATE TABLE metadata_link( | ||
| metadata_id BIGINT NOT NULL REFERENCES metadata(id) ON DELETE CASCADE, | ||
| link_id BIGINT NOT NULL REFERENCES link(id), | ||
| CONSTRAINT c_metadata_link_metadata_id_link_id UNIQUE (metadata_id, link_id) | ||
| ); | ||
| */ | ||
|
|
||
| /* ************************************************************************* | ||
| * INSERT queries | ||
| **************************************************************************/ | ||
|
|
||
| /** | ||
| * Insert the given person list into the DB. | ||
| * | ||
| * @param metadata the persons to insert | ||
| * @return return the stored persons | ||
| * @throws SQLException if inserting fails | ||
| */ | ||
| public List<Stored<Metadata>> insert(final List<Metadata> metadata) | ||
| throws SQLException | ||
| { | ||
| final Map<Person, Long> persons = DAO | ||
| .set(metadata, Metadata::getAuthor, with(PersonDAO::new)::put); | ||
|
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| final Map<Copyright, Long> copyrights = DAO | ||
| .set(metadata, Metadata::getCopyright, with(CopyrightDAO::new)::put); | ||
|
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| final Map<Bounds, Long> bounds = DAO | ||
| .set(metadata, Metadata::getBounds, with(BoundsDAO::new)::insert); | ||
|
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| final String query = | ||
| "INSERT INTO person(name, email, link_id) " + | ||
| "VALUES({name}, {email}, {link_id});"; | ||
|
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| final List<Stored<Metadata>> inserted = | ||
| Batch(query).insert(metadata, md -> asList( | ||
| Param.value("name", md.getName()), | ||
| Param.value("desc", md.getDescription()), | ||
| Param.value("person_id", md.getAuthor().map(persons::get)), | ||
| Param.value("copyright_id", md.getCopyright().map(copyrights::get)), | ||
| Param.value("time", md.getTime()), | ||
| Param.value("keywords", md.getKeywords()), | ||
| Param.value("bounds_id", md.getBounds().map(bounds::get)) | ||
| )); | ||
|
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| final Map<Link, Long> links = DAO | ||
| .set(metadata, Metadata::getLinks, with(LinkDAO::new)::put); | ||
|
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| return null; | ||
| } | ||
|
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| /* ************************************************************************* | ||
| * SELECT queries | ||
| **************************************************************************/ | ||
|
|
||
| /** | ||
| * Select all available copyrights. | ||
| * | ||
| * @return all stored copyrights | ||
| * @throws SQLException if the select fails | ||
| */ | ||
| /* | ||
| public List<Stored<Metadata>> select() throws SQLException { | ||
| final String query = | ||
| "SELECT id, " + | ||
| "name, " + | ||
| "description, " + | ||
| "person.name AS person_name, " + | ||
| "person.email AS person_email, " + | ||
| "link.href AS link_href, " + | ||
| "link.text AS link_text, " + | ||
| "link.type AS link_type " + | ||
| "person."; | ||
| return SQL(query).as(RowParser.list()); | ||
| } | ||
| */ | ||
|
|
||
| } |
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