Signed-off-by: Lixfel <agga-games@gmx.de>
Dieser Commit ist enthalten in:
Ursprung
d6c29a25b9
Commit
29bc98889a
39
src/de/steamwar/sql/Field.java
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39
src/de/steamwar/sql/Field.java
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@ -0,0 +1,39 @@
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/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2022 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.sql;
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public class Field {
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private final String identifier;
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private final Class<?> type;
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public Field(String identifier, Class<?> type) {
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this.identifier = identifier;
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this.type = type;
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}
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public String identifier() {
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return identifier;
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}
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public Class<?> type() {
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return type;
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}
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}
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35
src/de/steamwar/sql/Row.java
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35
src/de/steamwar/sql/Row.java
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@ -0,0 +1,35 @@
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/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2022 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.sql;
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public class Row {
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private final Table table;
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private Object[] values;
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public Row(Table table, Object[] values) {
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this.table = table;
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this.values = values;
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}
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void update(Field field, Object value) {
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}
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}
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@ -111,6 +111,10 @@ public class Statement implements AutoCloseable {
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withConnection(PreparedStatement::executeUpdate, objects);
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}
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public String getSql() {
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return sql;
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}
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private <T> T withConnection(SQLRunnable<T> runnable, Object... objects) {
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Connection connection = aquireConnection();
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87
src/de/steamwar/sql/Table.java
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87
src/de/steamwar/sql/Table.java
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@ -0,0 +1,87 @@
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/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2022 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.sql;
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import java.util.*;
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import java.util.logging.Level;
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import java.util.stream.Collectors;
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public class Table {
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private final String name;
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private final Field key;
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private final Field[] fields;
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private final Map<Field, Statement> selectBy = new HashMap<>();
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public Table(String name, Field key, Field... fields) {
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this.name = name;
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this.key = key;
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this.fields = fields;
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}
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public Row selectSingle(Field field, Object value) {
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return select(rs -> {
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if(!rs.next())
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return null;
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Object[] values = new Object[fields.length];
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for(int i = 0; i < fields.length; i++) {
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values[i] = fields[i].type().cast(rs.getObject(i));
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}
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if(rs.next())
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SQLConfig.impl.getLogger().log(Level.WARNING, "Statement returned more than one result " + selectBy.get(field).getSql() + " for value " + value);
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return new Row(this, values);
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}, field, value);
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}
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public List<Row> selectMulti(Field field, Object value) {
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return select(rs -> {
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List<Row> result = new ArrayList<>();
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while(rs.next()) {
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Object[] values = new Object[fields.length];
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for(int i = 0; i < fields.length; i++) {
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values[i] = fields[i].type().cast(rs.getObject(i));
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}
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result.add(new Row(this, values));
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}
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return result;
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}, field, value);
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}
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public void create() {
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//TODO and alter table
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}
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public Field getKey() {
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return key;
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}
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private <T> T select(Statement.ResultSetUser<T> u, Field field, Object value) {
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Statement statement;
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synchronized (selectBy) {
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statement = selectBy.computeIfAbsent(field, f -> new Statement("SELECT " + Arrays.stream(fields).map(Field::identifier).collect(Collectors.joining(", ")) + " FROM " + name + " WHERE " + field.identifier() + " = ?"));
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}
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return statement.select(u, value);
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}
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}
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