com.alibaba.druid.sql.dialect.oracle.ast.stmt.OracleSelectJoin Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of druid Show documentation
Show all versions of druid Show documentation
An JDBC datasource implementation.
/*
* Copyright 1999-2018 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.dialect.oracle.ast.stmt;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
import com.alibaba.druid.sql.ast.statement.SQLExprTableSource;
import com.alibaba.druid.sql.ast.statement.SQLJoinTableSource;
import com.alibaba.druid.sql.ast.statement.SQLTableSource;
import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
public class OracleSelectJoin extends SQLJoinTableSource implements OracleSelectTableSource {
protected OracleSelectPivotBase pivot;
public OracleSelectJoin(String alias){
super(alias);
}
public OracleSelectJoin(){
}
public OracleSelectJoin(SQLTableSource left, JoinType joinType, SQLTableSource right, SQLExpr condition){
super (left, joinType, right, condition);
}
public OracleSelectPivotBase getPivot() {
return pivot;
}
public void setPivot(OracleSelectPivotBase pivot) {
this.pivot = pivot;
}
@Override
protected void accept0(SQLASTVisitor visitor) {
this.accept0((OracleASTVisitor) visitor);
}
protected void accept0(OracleASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, this.left);
acceptChild(visitor, this.right);
acceptChild(visitor, this.condition);
acceptChild(visitor, this.using);
acceptChild(visitor, this.flashback);
}
visitor.endVisit(this);
}
public void output(StringBuffer buf) {
this.left.output(buf);
buf.append(JoinType.toString(this.joinType));
this.right.output(buf);
if (this.condition != null) {
buf.append(" ON ");
this.condition.output(buf);
}
if (this.using.size() > 0) {
buf.append(" USING (");
int i = 0;
for (int size = this.using.size(); i < size; ++i) {
if (i != 0) {
buf.append(", ");
}
((SQLExpr) this.using.get(i)).output(buf);
}
buf.append(")");
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
OracleSelectJoin that = (OracleSelectJoin) o;
if (pivot != null ? !pivot.equals(that.pivot) : that.pivot != null) return false;
return flashback != null ? flashback.equals(that.flashback) : that.flashback == null;
}
@Override
public int hashCode() {
int result = pivot != null ? pivot.hashCode() : 0;
result = 31 * result + (flashback != null ? flashback.hashCode() : 0);
return result;
}
public String toString () {
return SQLUtils.toOracleString(this);
}
public SQLJoinTableSource clone() {
OracleSelectJoin x = new OracleSelectJoin();
cloneTo(x);
if (pivot != null) {
x.setPivot(pivot.clone());
}
if (flashback != null) {
x.setFlashback(flashback.clone());
}
return x;
}
public void setLeft(String tableName) {
SQLExprTableSource tableSource;
if (tableName == null || tableName.length() == 0) {
tableSource = null;
} else {
tableSource = new OracleSelectTableReference(new SQLIdentifierExpr(tableName));
}
this.setLeft(tableSource);
}
public void setRight(String tableName) {
SQLExprTableSource tableSource;
if (tableName == null || tableName.length() == 0) {
tableSource = null;
} else {
tableSource = new OracleSelectTableReference(new SQLIdentifierExpr(tableName));
}
this.setRight(tableSource);
}
public SQLJoinTableSource join(SQLTableSource right, JoinType joinType, SQLExpr condition) {
SQLJoinTableSource joined = new OracleSelectJoin(this, joinType, right, condition);
return joined;
}
}