content: /*
   * 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.mysql.visitor;
  
  import com.alibaba.druid.sql.ast.SQLLimit;
  import com.alibaba.druid.sql.ast.SQLOrderBy;
  import com.alibaba.druid.sql.ast.expr.SQLBetweenExpr;
  import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
  import com.alibaba.druid.sql.ast.expr.SQLInListExpr;
  import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
  import com.alibaba.druid.sql.ast.statement.SQLSelectGroupByClause;
  import com.alibaba.druid.sql.ast.statement.SQLSelectItem;
  import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlFlushStatement;
  import com.alibaba.druid.sql.visitor.ExportParameterVisitor;
  import com.alibaba.druid.sql.visitor.ExportParameterVisitorUtils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class MySqlExportParameterVisitor extends MySqlOutputVisitor implements ExportParameterVisitor {
      /**
       * true= if require parameterized sql output
       */
      private boolean requireParameterizedOutput;
  
      public MySqlExportParameterVisitor(List<Object> parameters, StringBuilder appender, boolean wantParameterizedOutput) {
          super(appender, true);
          this.parameters = parameters;
          this.requireParameterizedOutput = wantParameterizedOutput;
      }
  
      public MySqlExportParameterVisitor() {
          this(new ArrayList<Object>());
      }
  
      public MySqlExportParameterVisitor(List<Object> parameters) {
          this(parameters, null, false);
      }
  
      public MySqlExportParameterVisitor(final StringBuilder appender) {
          this(new ArrayList<Object>(), appender, true);
      }
  
      public List<Object> getParameters() {
          return parameters;
      }
  
      @Override
      public boolean visit(final SQLSelectItem x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          return true;
      }
  
      @Override
      public boolean visit(SQLLimit x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
  
          return true;
      }
  
      @Override
      public boolean visit(SQLOrderBy x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          return false;
      }
  
      @Override
      public boolean visit(SQLSelectGroupByClause x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          return false;
      }
  
      @Override
      public boolean visit(SQLMethodInvokeExpr x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
  
          ExportParameterVisitorUtils.exportParamterAndAccept(this.parameters, x.getArguments());
          return true;
      }
  
      @Override
      public boolean visit(SQLInListExpr x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          ExportParameterVisitorUtils.exportParamterAndAccept(this.parameters, x.getTargetList());
  
          return true;
      }
  
      @Override
      public boolean visit(SQLBetweenExpr x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          ExportParameterVisitorUtils.exportParameter(this.parameters, x);
          return true;
      }
  
      public boolean visit(SQLBinaryOpExpr x) {
          if (requireParameterizedOutput) {
              return super.visit(x);
          }
          ExportParameterVisitorUtils.exportParameter(this.parameters, x);
          return true;
      }
  
      @Override
      public boolean visit(MySqlFlushStatement x) {
          return true;
      }
  
      @Override
      public void endVisit(MySqlFlushStatement x) {
      }
  }
  