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An JDBC datasource implementation.
/*
* Copyright 1999-2017 Alibaba Group Holding Ltd.
*
* 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.alibaba.druid.sql.builder.impl;
import com.alibaba.druid.DbType;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.expr.*;
import com.alibaba.druid.sql.builder.SQLBuilder;
public class SQLBuilderImpl implements SQLBuilder {
public static SQLExpr toSQLExpr(Object obj, DbType dbType) {
if (obj == null) {
return new SQLNullExpr();
}
if (obj instanceof Integer) {
return new SQLIntegerExpr((Integer) obj);
}
if (obj instanceof Number) {
return new SQLNumberExpr((Number) obj);
}
if (obj instanceof String) {
return new SQLCharExpr((String) obj);
}
if (obj instanceof Boolean) {
return new SQLBooleanExpr((Boolean) obj);
}
throw new IllegalArgumentException("not support : " + obj.getClass().getName());
}
}