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Code Issues Releases Wiki Activity

sql parser support drop database

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This commit is contained in:
wenshao
2013-08-04 21:15:04 +08:00
parent 31250baebc
commit 9caef67756
7 changed files with 181 additions and 3 deletions
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src/main/java/com/alibaba/druid/sql/ast/statement/SQLDropDatabaseStatement.java
+54
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@@ -0,0 +1,54 @@
/*
* 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.sql.ast.statement;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLStatementImpl;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
public class SQLDropDatabaseStatement extends SQLStatementImpl implements SQLDDLStatement {
private SQLExpr database;
private boolean ifExists;
@Override
protected void accept0(SQLASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, database);
}
visitor.endVisit(this);
}
public SQLExpr getDatabase() {
return database;
}
public void setDatabase(SQLExpr database) {
if (database != null) {
database.setParent(this);
}
this.database = database;
}
public boolean isIfExists() {
return ifExists;
}
public void setIfExists(boolean ifExists) {
this.ifExists = ifExists;
}
}
src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java
+27
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@@ -43,6 +43,7 @@ import com.alibaba.druid.sql.ast.statement.SQLCreateIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateViewStatement;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropSequenceStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropTableStatement;
@@ -180,6 +181,10 @@ public class SQLStatementParser extends SQLParser {
SQLStatement stmt = parseDropTrigger(false);
statementList.add(stmt);
continue;
} else if (lexer.token() == Token.DATABASE) {
SQLStatement stmt = parseDropDatabase(false);
statementList.add(stmt);
continue;
} else {
throw new ParserException("TODO " + lexer.token());
}
@@ -767,6 +772,28 @@ public class SQLStatementParser extends SQLParser {
return stmt;
}
protected SQLDropDatabaseStatement parseDropDatabase(boolean acceptDrop) {
if (acceptDrop) {
accept(Token.DROP);
}
SQLDropDatabaseStatement stmt = new SQLDropDatabaseStatement();
accept(Token.DATABASE);
if (lexer.token() == Token.IF) {
lexer.nextToken();
accept(Token.EXISTS);
stmt.setIfExists(true);
}
SQLName name = this.exprParser.name();
stmt.setDatabase(name);
return stmt;
}
public SQLStatement parseTruncate() {
accept(Token.TRUNCATE);
src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
+17 -3
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@@ -95,6 +95,7 @@ import com.alibaba.druid.sql.ast.statement.SQLCreateDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropSequenceStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropTableStatement;
@@ -1723,12 +1724,12 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Printab
if (x.getOn() != null) {
print(" ON ");
if (x.getObjectType() != null) {
print(x.getObjectType().name());
print(' ');
}
x.getOn().accept(this);
}
@@ -1773,7 +1774,7 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Printab
print(" MAX_USER_CONNECTIONS ");
x.getMaxUserConnections().accept(this);
}
if (x.isAdminOption()) {
if (!with) {
print(" WITH");
@@ -1784,4 +1785,17 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Printab
return false;
}
@Override
public boolean visit(SQLDropDatabaseStatement x) {
print("DROP DATABASE ");
if (x.isIfExists()) {
print("IF EXISTS ");
}
x.getDatabase().accept(this);
return false;
}
}
src/main/java/com/alibaba/druid/sql/visitor/SQLASTVisitor.java
+5
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@@ -79,6 +79,7 @@ import com.alibaba.druid.sql.ast.statement.SQLCreateIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateViewStatement;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropSequenceStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropTableStatement;
@@ -509,4 +510,8 @@ public interface SQLASTVisitor {
void endVisit(SQLGrantStatement x);
boolean visit(SQLGrantStatement x);
void endVisit(SQLDropDatabaseStatement x);
boolean visit(SQLDropDatabaseStatement x);
}
src/main/java/com/alibaba/druid/sql/visitor/SQLASTVisitorAdapter.java
+11
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@@ -80,6 +80,7 @@ import com.alibaba.druid.sql.ast.statement.SQLCreateIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateViewStatement;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropSequenceStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropTableStatement;
@@ -986,4 +987,14 @@ public class SQLASTVisitorAdapter implements SQLASTVisitor {
public boolean visit(SQLGrantStatement x) {
return true;
}
@Override
public void endVisit(SQLDropDatabaseStatement x) {
}
@Override
public boolean visit(SQLDropDatabaseStatement x) {
return true;
}
}
src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java
+6
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@@ -52,6 +52,7 @@ import com.alibaba.druid.sql.ast.statement.SQLCreateIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
import com.alibaba.druid.sql.ast.statement.SQLCreateViewStatement;
import com.alibaba.druid.sql.ast.statement.SQLDeleteStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropDatabaseStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropIndexStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropSequenceStatement;
import com.alibaba.druid.sql.ast.statement.SQLDropTableStatement;
@@ -1266,4 +1267,9 @@ public class SchemaStatVisitor extends SQLASTVisitorAdapter {
public boolean visit(SQLGrantStatement x) {
return false;
}
@Override
public boolean visit(SQLDropDatabaseStatement x) {
return false;
}
}