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.ast.statement;
  
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLHint;
  import com.alibaba.druid.sql.ast.SQLName;
  import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLLateralViewTableSource extends SQLTableSourceImpl {
      private SQLTableSource tableSource;
      private boolean outer;
  
      private SQLMethodInvokeExpr method;
  
      private List<SQLName> columns = new ArrayList<SQLName>(2);
  
      private SQLExpr on; // odps
  
      public SQLLateralViewTableSource() {
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, tableSource);
              acceptChild(visitor, method);
              acceptChild(visitor, columns);
              super.accept0(visitor);
          }
          visitor.endVisit(this);
      }
  
      public SQLTableSource getTableSource() {
          return tableSource;
      }
  
      public void setTableSource(SQLTableSource tableSource) {
          if (tableSource != null) {
              tableSource.setParent(this);
          }
          this.tableSource = tableSource;
      }
  
      public SQLMethodInvokeExpr getMethod() {
          return method;
      }
  
      public void setMethod(SQLMethodInvokeExpr method) {
          if (method != null) {
              method.setParent(this);
          }
          this.method = method;
      }
  
      public List<SQLName> getColumns() {
          return columns;
      }
  
      public void setColumns(List<SQLName> columns) {
          this.columns = columns;
      }
  
      public SQLTableSource findTableSource(long alias_hash) {
          long hash = this.aliasHashCode64();
          if (hash != 0 && hash == alias_hash) {
              return this;
          }
  
          for (SQLName column : columns) {
              if (column.nameHashCode64() == alias_hash) {
                  return this;
              }
          }
  
          if (tableSource != null) {
              return tableSource.findTableSource(alias_hash);
          }
  
          return null;
      }
  
      public SQLTableSource findTableSourceWithColumn(long columnNameHash, String columnName, int option) {
          for (SQLName column : columns) {
              if (column.nameHashCode64() == columnNameHash) {
                  return this;
              }
          }
  
          if (tableSource != null) {
              return tableSource.findTableSourceWithColumn(columnNameHash, columnName, option);
          }
          return null;
      }
  
      @Override
      public SQLLateralViewTableSource clone() {
          SQLLateralViewTableSource x = new SQLLateralViewTableSource();
  
          x.setAlias(this.alias);
          x.outer = outer;
  
          if (this.tableSource != null) {
              x.setTableSource(this.tableSource.clone());
          }
  
          if (this.method != null) {
              x.setMethod(this.method.clone());
          }
  
          for (SQLName column : this.columns) {
              SQLName e2 = column.clone();
              e2.setParent(x);
              x.getColumns().add(e2);
          }
  
          if (this.flashback != null) {
              x.setFlashback(this.flashback.clone());
          }
  
          if (this.hints != null) {
              for (SQLHint e : this.hints) {
                  SQLHint e2 = e.clone();
                  e2.setParent(x);
                  x.getHints().add(e2);
              }
          }
  
          return x;
      }
  
      public boolean isOuter() {
          return outer;
      }
  
      public void setOuter(boolean outer) {
          this.outer = outer;
      }
  
      public SQLExpr getOn() {
          return on;
      }
  
      public void setOn(SQLExpr on) {
          this.on = on;
      }
  }
  