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A quick developing framewort for internet company
/**
* Copyright (C) 2016 - 2030 youtongluan.
*
* 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.yx.db.sql;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.StringJoiner;
import org.yx.common.ItemJoiner;
import org.yx.db.visit.SumkDbVisitor;
import org.yx.exception.SumkException;
import org.yx.util.CollectionUtil;
import org.yx.util.StringUtil;
public class SelectBuilder extends AbstractSqlBuilder>> {
public SelectBuilder(SumkDbVisitor>> visitor) {
super(visitor);
this.fromCache = DBSettings.fromCache();
this.toCache = DBSettings.toCache();
}
protected static final String[] COMPARES = { ">", ">=", "<", "<=", " like ", " != " };// like前后要有空格
protected static final int BIG = 0;
protected static final int BIG_EQUAL = 1;
protected static final int LESS = 2;
protected static final int LESS_EQUAL = 3;
protected static final int LIKE = 4;
protected static final int NOT = 5;
protected List selectColumns;
protected Map[] _compare;
protected List orderby;
protected int offset;
protected int limit;
protected boolean fromCache;
protected boolean toCache;
protected boolean allowEmptyWhere;
protected CompareNullPolicy compareNullPolicy = CompareNullPolicy.CONTINUE;
@Override
public MapedSql toMapedSql() throws Exception {
List
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