com.speedment.runtime.core.internal.db.AbstractDbmsType Maven / Gradle / Ivy

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A Speedment bundle that shades all dependencies into one jar. This is useful when deploying an application on a server.
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/*
 *
 * Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
 *
 * 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 com.speedment.runtime.core.internal.db;

import com.speedment.common.injector.annotation.ExecuteBefore;
import com.speedment.common.injector.annotation.Inject;
import com.speedment.common.injector.annotation.WithState;
import com.speedment.runtime.config.Column;
import com.speedment.runtime.core.component.DbmsHandlerComponent;
import com.speedment.runtime.core.db.DatabaseNamingConvention;
import com.speedment.runtime.core.db.DbmsColumnHandler;
import com.speedment.runtime.core.db.DbmsType;
import com.speedment.runtime.core.db.DriverComponent;
import com.speedment.runtime.core.db.metadata.TypeInfoMetaData;

import java.sql.Driver;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.function.Predicate;

import static com.speedment.common.injector.State.CREATED;
import static com.speedment.common.injector.State.INITIALIZED;
import static com.speedment.common.invariant.LongRangeUtil.requireNonNegative;
import static java.util.Objects.requireNonNull;

/**
 *
 * @author Emil Forslund
 * @since 3.0.0
 */
public abstract class AbstractDbmsType implements DbmsType {

    private static final DbmsColumnHandler DEFAULT_COLUMN_HANDLER = new DbmsColumnHandler() {
        @Override
        public Predicate excludedInInsertStatement() {
            return Column::isAutoIncrement;
        }

        @Override
        public Predicate excludedInUpdateStatement() {
            return c -> false;
        }
    };

    private final DriverComponent drivers;

    public AbstractDbmsType(DriverComponent drivers) {
        this.drivers = requireNonNull(drivers);
    }

    @ExecuteBefore(INITIALIZED)
    void install(@WithState(CREATED) DbmsHandlerComponent component) {
        component.install(this);
    }

    @Override
    public String getResultSetTableSchema() {
        return "TABLE_SCHEM";
    }

    @Override
    public String getSchemaTableDelimiter() {
        return ".";
    }

    @Override
    public boolean isSupported() {
        return isSupported(getDriverName());
    }

    protected boolean isSupported(String driverName) {
        return driver(driverName).isPresent();
    }

    protected Optional driver(String driverName) {
        return drivers.driver(driverName);
    }

    @Override
    public DatabaseNamingConvention getDatabaseNamingConvention() {
        return new DefaultDatabaseNamingConvention();
    }

    @Override
    public Set getDataTypes() {
        return Collections.emptySet();
    }

    @Override
    public Optional getDefaultDbmsName() {
        return Optional.empty();
    }

    @Override
    public String getInitialQuery() {
        return "select 1 from dual";
    }

    @Override
    public DbmsColumnHandler getColumnHandler() {
        return DEFAULT_COLUMN_HANDLER;
    }

    @Override
    public SkipLimitSupport getSkipLimitSupport() {
        return SkipLimitSupport.STANDARD;
    }

    @Override
    public String applySkipLimit(String originalSql, List