SQLServerSchemaStatVisitor.java

/*
 * 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.sqlserver.visitor;

import java.util.Map;

import com.alibaba.druid.sql.ast.SQLDeclareItem;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.statement.SQLInsertStatement;
import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
import com.alibaba.druid.sql.dialect.sqlserver.ast.SQLServerOutput;
import com.alibaba.druid.sql.dialect.sqlserver.ast.SQLServerSelect;
import com.alibaba.druid.sql.dialect.sqlserver.ast.SQLServerSelectQueryBlock;
import com.alibaba.druid.sql.dialect.sqlserver.ast.SQLServerTop;
import com.alibaba.druid.sql.dialect.sqlserver.ast.expr.SQLServerObjectReferenceExpr;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerCommitStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerDeclareStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerExecStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerExecStatement.SQLServerParameter;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerInsertStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerRollbackStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerSetStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerSetTransactionIsolationLevelStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerUpdateStatement;
import com.alibaba.druid.sql.dialect.sqlserver.ast.stmt.SQLServerWaitForStatement;
import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
import com.alibaba.druid.stat.TableStat;
import com.alibaba.druid.util.JdbcUtils;

public class SQLServerSchemaStatVisitor extends SchemaStatVisitor implements SQLServerASTVisitor {

    @Override
    public String getDbType() {
        return JdbcUtils.SQL_SERVER;
    }

    @Override
    public boolean visit(SQLServerSelectQueryBlock x) {
        return visit((SQLSelectQueryBlock) x);
    }

    @Override
    public void endVisit(SQLServerSelectQueryBlock x) {
        endVisit((SQLSelectQueryBlock) x);
    }

    @Override
    public boolean visit(SQLServerTop x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerTop x) {

    }

    @Override
    public boolean visit(SQLServerObjectReferenceExpr x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerObjectReferenceExpr x) {

    }

    @Override
    public boolean visit(SQLServerInsertStatement x) {
        this.visit((SQLInsertStatement) x);
        return false;
    }

    @Override
    public void endVisit(SQLServerInsertStatement x) {
        this.endVisit((SQLInsertStatement) x);
    }

    @Override
    public boolean visit(SQLServerUpdateStatement x) {
        setAliasMap();

        String ident = x.getTableName().toString();
        setCurrentTable(ident);

        TableStat stat = getTableStat(ident);
        stat.incrementUpdateCount();

        Map<String, String> aliasMap = getAliasMap();
        aliasMap.put(ident, ident);

        accept(x.getItems());
        accept(x.getFrom());
        accept(x.getWhere());

        return false;
    }

    @Override
    public void endVisit(SQLServerUpdateStatement x) {

    }

    @Override
    public boolean visit(SQLServerExecStatement x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerExecStatement x) {

    }

    @Override
    public boolean visit(SQLServerSetTransactionIsolationLevelStatement x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerSetTransactionIsolationLevelStatement x) {

    }

    @Override
    public boolean visit(SQLServerSetStatement x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerSetStatement x) {

    }

    @Override
    public boolean visit(SQLServerOutput x) {
        return false;
    }

    @Override
    public void endVisit(SQLServerOutput x) {

    }

    @Override
    public boolean visit(SQLServerDeclareStatement x) {
        for (SQLDeclareItem item : x.getItems()) {
            item.setParent(x);

            SQLExpr name = item.getName();
            this.variants.put(name.toString(), name);
        }
        return true;
    }

    @Override
    public void endVisit(SQLServerDeclareStatement x) {

    }

    @Override
    public boolean visit(SQLServerSelect x) {
        return super.visit(x);
    }

    @Override
    public void endVisit(SQLServerSelect x) {

    }

    @Override
    public boolean visit(SQLServerCommitStatement x) {
        return true;
    }

    @Override
    public void endVisit(SQLServerCommitStatement x) {

    }

    @Override
    public boolean visit(SQLServerRollbackStatement x) {
        return true;
    }

    @Override
    public void endVisit(SQLServerRollbackStatement x) {

    }

    @Override
    public boolean visit(SQLServerWaitForStatement x) {
        return true;
    }

    @Override
    public void endVisit(SQLServerWaitForStatement x) {

    }

	@Override
	public boolean visit(SQLServerParameter x) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public void endVisit(SQLServerParameter x) {
		// TODO Auto-generated method stub
		
	}

}