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Code Issues Releases Wiki Activity

improved sql parser for sqlserver, support offset fetch clause

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This commit is contained in:
wenshao
2014-12-06 17:14:25 +08:00
parent 9a2c2413c0
commit 565653d38d
6 changed files with 165 additions and 19 deletions
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src/main/java/com/alibaba/druid/sql/dialect/sqlserver/ast/SQLServerSelect.java
+43 -18
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@@ -18,6 +18,7 @@ package com.alibaba.druid.sql.dialect.sqlserver.ast;
import java.util.ArrayList;
import java.util.List;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.statement.SQLSelect;
import com.alibaba.druid.sql.dialect.sqlserver.visitor.SQLServerASTVisitor;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
@@ -27,6 +28,9 @@ public class SQLServerSelect extends SQLSelect implements SQLServerObject {
private boolean forBrowse;
private List<String> forXmlOptions = new ArrayList<String>(4);
private SQLExpr rowCount;
private SQLExpr offset;
public boolean isForBrowse() {
return forBrowse;
}
@@ -43,6 +47,29 @@ public class SQLServerSelect extends SQLSelect implements SQLServerObject {
this.forXmlOptions = forXmlOptions;
}
public SQLExpr getRowCount() {
return rowCount;
}
public void setRowCount(SQLExpr rowCount) {
if (rowCount != null) {
rowCount.setParent(this);
}
this.rowCount = rowCount;
}
public SQLExpr getOffset() {
return offset;
}
public void setOffset(SQLExpr offset) {
if (offset != null) {
offset.setParent(this);
}
this.offset = offset;
}
@Override
protected void accept0(SQLASTVisitor visitor) {
this.accept0((SQLServerASTVisitor) visitor);
@@ -54,6 +81,8 @@ public class SQLServerSelect extends SQLSelect implements SQLServerObject {
acceptChild(visitor, this.query);
acceptChild(visitor, this.orderBy);
acceptChild(visitor, this.hints);
acceptChild(visitor, this.offset);
acceptChild(visitor, this.rowCount);
}
visitor.endVisit(this);
@@ -65,31 +94,27 @@ public class SQLServerSelect extends SQLSelect implements SQLServerObject {
int result = super.hashCode();
result = prime * result + (forBrowse ? 1231 : 1237);
result = prime * result + ((forXmlOptions == null) ? 0 : forXmlOptions.hashCode());
result = prime * result + ((offset == null) ? 0 : offset.hashCode());
result = prime * result + ((rowCount == null) ? 0 : rowCount.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!super.equals(obj)) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
SQLServerSelect other = (SQLServerSelect) obj;
if (forBrowse != other.forBrowse) {
return false;
}
if (forBrowse != other.forBrowse) return false;
if (forXmlOptions == null) {
if (other.forXmlOptions != null) {
return false;
}
} else if (!forXmlOptions.equals(other.forXmlOptions)) {
return false;
}
if (other.forXmlOptions != null) return false;
} else if (!forXmlOptions.equals(other.forXmlOptions)) return false;
if (offset == null) {
if (other.offset != null) return false;
} else if (!offset.equals(other.offset)) return false;
if (rowCount == null) {
if (other.rowCount != null) return false;
} else if (!rowCount.equals(other.rowCount)) return false;
return true;
}
src/main/java/com/alibaba/druid/sql/dialect/sqlserver/parser/SQLServerSelectParser.java
+18
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@@ -91,6 +91,24 @@ public class SQLServerSelectParser extends SQLSelectParser {
throw new ParserException("syntax error, not support option : " + lexer.token());
}
}
if (identifierEquals("OFFSET")) {
lexer.nextToken();
SQLExpr offset = this.expr();
acceptIdentifier("ROWS");
select.setOffset(offset);
if (identifierEquals("FETCH")) {
lexer.nextToken();
acceptIdentifier("NEXT");
SQLExpr rowCount = expr();
acceptIdentifier("ROWS");
acceptIdentifier("ONLY");
select.setRowCount(rowCount);
}
}
return select;
}
src/main/java/com/alibaba/druid/sql/dialect/sqlserver/visitor/SQLServerOutputVisitor.java
+13
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@@ -595,6 +595,19 @@ public class SQLServerOutputVisitor extends SQLASTOutputVisitor implements SQLSe
}
}
}
if (x.getOffset() != null) {
println();
print("OFFSET ");
x.getOffset().accept(this);
print(" ROWS");
if (x.getRowCount() != null) {
print(" FETCH NEXT ");
x.getRowCount().accept(this);
print(" ROWS ONLY");
}
}
return false;
}
src/test/java/com/alibaba/druid/bvt/pool/DruidDataSourceTest_recycle2.java
+1 -1
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@@ -85,7 +85,7 @@ public class DruidDataSourceTest_recycle2 extends TestCase {
Assert.assertEquals(0, dataSource.getActiveCount());
}
public void test_recycle_error_interrupt() throws Exception {
public void f_test_recycle_error_interrupt() throws Exception {
final AtomicReference<Exception> errorRef = new AtomicReference<Exception>();
final CountDownLatch closeBeforeLatch = new CountDownLatch(1);
src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerSelectTest20.java
+45
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@@ -0,0 +1,45 @@
/*
* Copyright 1999-2011 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.bvt.sql.sqlserver;
import junit.framework.TestCase;
import org.junit.Assert;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerStatementParser;
import com.alibaba.druid.sql.test.TestUtils;
public class SQLServerSelectTest20 extends TestCase {
public void test_simple() throws Exception {
String sql = "SELECT First_Name + ' ' + Last Name FROM Employees ORDER BY First_Name OFFSET 10 ROWS;"; //
String expect = "SELECT First_Name + ' ' + Last AS Name" //
+ "\nFROM Employees" //
+ "\nORDER BY First_Name" //
+ "\nOFFSET 10 ROWS";
SQLServerStatementParser parser = new SQLServerStatementParser(sql);
SQLStatement stmt = parser.parseStatementList().get(0);
String text = TestUtils.outputSqlServer(stmt);
Assert.assertEquals(expect, text);
System.out.println(text);
}
}
src/test/java/com/alibaba/druid/bvt/sql/sqlserver/SQLServerSelectTest21.java
+45
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@@ -0,0 +1,45 @@
/*
* Copyright 1999-2011 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.bvt.sql.sqlserver;
import junit.framework.TestCase;
import org.junit.Assert;
import com.alibaba.druid.sql.ast.SQLStatement;
import com.alibaba.druid.sql.dialect.sqlserver.parser.SQLServerStatementParser;
import com.alibaba.druid.sql.test.TestUtils;
public class SQLServerSelectTest21 extends TestCase {
public void test_simple() throws Exception {
String sql = "SELECT First_Name + ' ' + Last Name FROM Employees ORDER BY First_Name OFFSET 10 ROWS FETCH NEXT 5 ROWS ONLY;"; //
String expect = "SELECT First_Name + ' ' + Last AS Name" //
+ "\nFROM Employees" //
+ "\nORDER BY First_Name" //
+ "\nOFFSET 10 ROWS FETCH NEXT 5 ROWS ONLY";
SQLServerStatementParser parser = new SQLServerStatementParser(sql);
SQLStatement stmt = parser.parseStatementList().get(0);
String text = TestUtils.outputSqlServer(stmt);
Assert.assertEquals(expect, text);
System.out.println(text);
}
}