Merge pull request alibaba#4913 from chenhaoyus/master

Add oscar parser support

src/main/java/com/alibaba/druid/sql/SQLUtils.java

@@ -48,6 +48,7 @@
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor;
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleToMySqlOutputVisitor;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarOutputVisitor;
 import com.alibaba.druid.sql.dialect.postgresql.visitor.PGOutputVisitor;
 import com.alibaba.druid.sql.dialect.postgresql.visitor.PGSchemaStatVisitor;
 import com.alibaba.druid.sql.dialect.presto.visitor.PrestoOutputVisitor;
@@ -519,6 +520,8 @@ public static SQLASTOutputVisitor createFormatOutputVisitor(Appendable out,
                 return new PrestoOutputVisitor(out);
             case clickhouse:
                 return new ClickhouseOutputVisitor(out);
+            case oscar:
+                return new OscarOutputVisitor(out);
             default:
                 return new SQLASTOutputVisitor(out, dbType);
         }

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/OscarObject.java

@@ -0,0 +1,23 @@
+/*
+ * 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.dialect.oscar.ast;
+
+import com.alibaba.druid.sql.ast.SQLObject;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+
+public interface OscarObject extends SQLObject {
+    void accept0(OscarASTVisitor visitor);
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/OscarObjectImpl.java

@@ -0,0 +1,32 @@
+/*
+ * 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.dialect.oscar.ast;
+
+import com.alibaba.druid.sql.ast.SQLObjectImpl;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+
+public abstract class OscarObjectImpl extends SQLObjectImpl implements OscarObject {
+    public OscarObjectImpl() {
+    }
+
+    @Override
+    protected void accept0(SQLASTVisitor visitor) {
+        this.accept0((OscarASTVisitor) visitor);
+    }
+
+    public abstract void accept0(OscarASTVisitor visitor);
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/OscarTop.java

@@ -0,0 +1,78 @@
+/*
+ * 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.dialect.oscar.ast;
+
+import com.alibaba.druid.sql.ast.SQLExpr;
+import com.alibaba.druid.sql.ast.expr.SQLIntegerExpr;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+
+public class OscarTop extends OscarObjectImpl {
+    private SQLExpr expr;
+    private boolean percent;
+    private boolean withTies;
+
+    public OscarTop() {
+    }
+
+    @Override
+    public void accept0(OscarASTVisitor visitor) {
+    }
+
+    public OscarTop(SQLExpr expr) {
+        this.setExpr(expr);
+    }
+
+    public SQLExpr getExpr() {
+        return expr;
+    }
+
+    public void setExpr(SQLExpr expr) {
+        if (expr != null) {
+            expr.setParent(this);
+        }
+        this.expr = expr;
+    }
+
+    public void setExpr(int expr) {
+        this.setExpr(new SQLIntegerExpr(expr));
+    }
+
+    public boolean isPercent() {
+        return percent;
+    }
+
+    public void setPercent(boolean percent) {
+        this.percent = percent;
+    }
+
+    public boolean isWithTies() {
+        return withTies;
+    }
+
+    public void setWithTies(boolean withTies) {
+        this.withTies = withTies;
+    }
+
+    public OscarTop clone() {
+        OscarTop x = new OscarTop();
+        if (expr != null) {
+            x.setExpr(expr.clone());
+        }
+        x.percent = percent;
+        x.withTies = withTies;
+        return x;
+    }
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/expr/OscarExpr.java

@@ -0,0 +1,22 @@
+/*
+ * 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.dialect.oscar.ast.expr;
+
+import com.alibaba.druid.sql.ast.SQLExpr;
+import com.alibaba.druid.sql.dialect.oscar.ast.OscarObject;
+
+public interface OscarExpr extends SQLExpr, OscarObject {
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/stmt/OscarAlterSchemaStatement.java

@@ -0,0 +1,67 @@
+/*
+ * 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.dialect.oscar.ast.stmt;
+
+import com.alibaba.druid.sql.ast.SQLStatementImpl;
+import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
+import com.alibaba.druid.sql.ast.statement.SQLAlterStatement;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGASTVisitor;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+
+public class OscarAlterSchemaStatement extends SQLStatementImpl implements OscarStatement, SQLAlterStatement {
+    private SQLIdentifierExpr schemaName;
+    private SQLIdentifierExpr newName;
+    private SQLIdentifierExpr newOwner;
+
+    public SQLIdentifierExpr getSchemaName() {
+        return schemaName;
+    }
+
+    public void setSchemaName(SQLIdentifierExpr schemaName) {
+        this.schemaName = schemaName;
+    }
+
+    protected void accept0(SQLASTVisitor visitor) {
+        accept0((PGASTVisitor) visitor);
+    }
+
+    public SQLIdentifierExpr getNewName() {
+        return newName;
+    }
+
+    public void setNewName(SQLIdentifierExpr newName) {
+        this.newName = newName;
+    }
+
+    public SQLIdentifierExpr getNewOwner() {
+        return newOwner;
+    }
+
+    public void setNewOwner(SQLIdentifierExpr newOwner) {
+        this.newOwner = newOwner;
+    }
+
+    @Override
+    public void accept0(OscarASTVisitor visitor) {
+        if (visitor.visit(this)) {
+            acceptChild(visitor, this.schemaName);
+            acceptChild(visitor, this.newName);
+            acceptChild(visitor, this.newOwner);
+        }
+        visitor.endVisit(this);
+    }
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/stmt/OscarAlterTableAlterColumnSetNotNull.java

@@ -0,0 +1,19 @@
+/*
+ * 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.dialect.oscar.ast.stmt;
+
+public class OscarAlterTableAlterColumnSetNotNull {
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/stmt/OscarConnectToStatement.java

@@ -0,0 +1,39 @@
+package com.alibaba.druid.sql.dialect.oscar.ast.stmt;
+
+import com.alibaba.druid.DbType;
+import com.alibaba.druid.sql.ast.SQLName;
+import com.alibaba.druid.sql.ast.SQLStatementImpl;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGASTVisitor;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+
+public class OscarConnectToStatement extends SQLStatementImpl implements OscarStatement {
+    private SQLName target;
+
+    public OscarConnectToStatement() {
+        super(DbType.oscar);
+    }
+
+    protected void accept0(SQLASTVisitor visitor) {
+        this.accept0((PGASTVisitor) visitor);
+    }
+
+    @Override
+    public void accept0(OscarASTVisitor v) {
+        if (v.visit(this)) {
+            acceptChild(v, target);
+        }
+        v.endVisit(this);
+    }
+
+    public SQLName getTarget() {
+        return target;
+    }
+
+    public void setTarget(SQLName x) {
+        if (x != null) {
+            x.setParent(this);
+        }
+        this.target = x;
+    }
+}

src/main/java/com/alibaba/druid/sql/dialect/oscar/ast/stmt/OscarCreateSchemaStatement.java

@@ -0,0 +1,75 @@
+/*
+ * 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.dialect.oscar.ast.stmt;
+
+import com.alibaba.druid.sql.ast.SQLStatementImpl;
+import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
+import com.alibaba.druid.sql.ast.statement.SQLCreateStatement;
+import com.alibaba.druid.sql.dialect.oscar.visitor.OscarASTVisitor;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGASTVisitor;
+import com.alibaba.druid.sql.visitor.SQLASTVisitor;
+
+public class OscarCreateSchemaStatement extends SQLStatementImpl implements OscarStatement, SQLCreateStatement {
+    private SQLIdentifierExpr schemaName;
+    private SQLIdentifierExpr userName;
+    private boolean ifNotExists;
+    private boolean authorization;
+
+    public SQLIdentifierExpr getSchemaName() {
+        return schemaName;
+    }
+
+    public void setSchemaName(SQLIdentifierExpr schemaName) {
+        this.schemaName = schemaName;
+    }
+
+    public SQLIdentifierExpr getUserName() {
+        return userName;
+    }
+
+    public void setUserName(SQLIdentifierExpr userName) {
+        this.userName = userName;
+    }
+
+    public boolean isIfNotExists() {
+        return ifNotExists;
+    }
+
+    public void setIfNotExists(boolean ifNotExists) {
+        this.ifNotExists = ifNotExists;
+    }
+
+    public boolean isAuthorization() {
+        return authorization;
+    }
+
+    public void setAuthorization(boolean authorization) {
+        this.authorization = authorization;
+    }
+
+    protected void accept0(SQLASTVisitor visitor) {
+        accept0((PGASTVisitor) visitor);
+    }
+
+    @Override
+    public void accept0(OscarASTVisitor visitor) {
+        if (visitor.visit(this)) {
+            acceptChild(visitor, this.schemaName);
+            acceptChild(visitor, this.userName);
+        }
+        visitor.endVisit(this);
+    }
+}