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.*;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLWithSubqueryClause extends SQLObjectImpl {
      private Boolean recursive;
      private final List<Entry> entries = new ArrayList<Entry>();
  
      protected void cloneTo(SQLWithSubqueryClause x) {
          super.cloneTo(x);
          x.recursive = recursive;
  
          for (Entry entry : entries) {
              Entry entry2 = entry.clone();
              entry2.setParent(x);
              x.entries.add(entry2);
          }
      }
  
      public SQLWithSubqueryClause clone() {
          SQLWithSubqueryClause x = new SQLWithSubqueryClause();
          cloneTo(x);
          return x;
      }
  
      public List<Entry> getEntries() {
          return entries;
      }
  
      public Entry findEntry(String alias) {
          if (alias == null) {
              return null;
          }
          for (Entry entry : entries) {
              if (alias.equals(entry.getAlias())) {
                  return entry;
              }
          }
          return null;
      }
  
      public void addEntry(Entry entry) {
          if (entry != null) {
              entry.setParent(this);
          }
          this.entries.add(entry);
      }
  
      public Boolean getRecursive() {
          return recursive;
      }
  
      public void setRecursive(Boolean recursive) {
          this.recursive = recursive;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              for (int i = 0; i < entries.size(); i++) {
                  Entry entry = entries.get(i);
                  if (entry != null) {
                      entry.accept(visitor);
                  }
              }
          }
          visitor.endVisit(this);
      }
  
      public static class Entry extends SQLTableSourceImpl implements SQLReplaceable {
          protected final List<SQLName> columns = new ArrayList<SQLName>();
          protected SQLSelect subQuery;
          protected SQLStatement returningStatement;
          protected SQLExpr expr;
          protected boolean prefixAlias;
  
          public Entry() {
          }
  
          public Entry(String alias, SQLSelect select) {
              this.setAlias(alias);
              this.setSubQuery(select);
          }
  
          public Entry(String alias, SQLExpr expr) {
              this.setAlias(alias);
              this.setExpr(expr);
          }
  
          public void cloneTo(Entry x) {
              for (SQLName column : columns) {
                  SQLName column2 = column.clone();
                  column2.setParent(x);
                  x.columns.add(column2);
              }
  
              if (subQuery != null) {
                  x.setSubQuery(subQuery.clone());
              }
  
              if (returningStatement != null) {
                  setReturningStatement(returningStatement.clone());
              }
  
              x.alias = alias;
              x.expr = expr;
              x.prefixAlias = prefixAlias;
          }
  
          public SQLObject resolveColumn(long columnNameHash) {
              if (subQuery != null) {
                  SQLSelectQueryBlock queryBlock = subQuery.getQueryBlock();
                  if (queryBlock != null) {
                      return queryBlock.findSelectItem(columnNameHash);
                  }
              }
              return null;
          }
  
          @Override
          public boolean replace(SQLExpr expr, SQLExpr target) {
              if (flashback == expr) {
                  setFlashback(target);
                  return true;
              }
  
              for (int i = 0; i < columns.size(); i++) {
                  if (columns.get(i) == expr) {
                      target.setParent(this);
                      columns.set(i, (SQLName) expr);
                      return true;
                  }
              }
              return false;
          }
  
          public Entry clone() {
              Entry x = new Entry();
              cloneTo(x);
              return x;
          }
  
          public SQLExpr getExpr() {
              return expr;
          }
  
          public void setExpr(SQLExpr expr) {
              this.expr = expr;
          }
  
          @Override
          protected void accept0(SQLASTVisitor visitor) {
              if (visitor.visit(this)) {
                  for (int i = 0; i < columns.size(); i++) {
                      SQLExpr column = columns.get(i);
                      if (column != null) {
                          column.accept(visitor);
                      }
                  }
  
                  if (subQuery != null) {
                      subQuery.accept(visitor);
                  }
  
                  if (returningStatement != null) {
                      returningStatement.accept(visitor);
                  }
  
                  if (expr != null) {
                      expr.accept(visitor);
                  }
              }
              visitor.endVisit(this);
          }
  
          public SQLSelect getSubQuery() {
              return subQuery;
          }
  
          public void setSubQuery(SQLSelect subQuery) {
              if (subQuery != null) {
                  subQuery.setParent(this);
              }
              this.subQuery = subQuery;
          }
  
          public SQLStatement getReturningStatement() {
              return returningStatement;
          }
  
          public void setReturningStatement(SQLStatement returningStatement) {
              if (returningStatement != null) {
                  returningStatement.setParent(this);
              }
              this.returningStatement = returningStatement;
          }
  
          public List<SQLName> getColumns() {
              return columns;
          }
  
          public SQLTableSource findTableSourceWithColumn(long columnNameHash, String columnName, int option) {
              for (SQLName column : columns) {
                  if (column.nameHashCode64() == columnNameHash) {
                      return this;
                  }
              }
  
              if (subQuery != null) {
                  SQLSelectQueryBlock queryBlock = subQuery.getFirstQueryBlock();
                  if (queryBlock != null) {
                      if (queryBlock.findSelectItem(columnNameHash) != null) {
                          return this;
                      }
                  }
              }
              return null;
          }
  
          public boolean isPrefixAlias() {
              return prefixAlias;
          }
  
          public void setPrefixAlias(boolean prefixAlias) {
              this.prefixAlias = prefixAlias;
          }
  
          @Override
          public boolean equals(Object o) {
              if (this == o) {
                  return true;
              }
              if (o == null || getClass() != o.getClass()) {
                  return false;
              }
              if (!super.equals(o)) {
                  return false;
              }
  
              Entry entry = (Entry) o;
  
              if (!columns.equals(entry.columns)) {
                  return false;
              }
              if (subQuery != null ? !subQuery.equals(entry.subQuery) : entry.subQuery != null) {
                  return false;
              }
              return returningStatement != null ? returningStatement.equals(entry.returningStatement) : entry.returningStatement == null;
          }
  
          @Override
          public int hashCode() {
              int result = super.hashCode();
              result = 31 * result + (columns != null ? columns.hashCode() : 0);
              result = 31 * result + (subQuery != null ? subQuery.hashCode() : 0);
              result = 31 * result + (returningStatement != null ? returningStatement.hashCode() : 0);
              return result;
          }
      }
  
      public Entry findEntry(long alias_hash) {
          if (alias_hash == 0) {
              return null;
          }
  
          for (Entry entry : entries) {
              if (entry.aliasHashCode64() == alias_hash) {
                  return entry;
              }
          }
  
          return null;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          SQLWithSubqueryClause that = (SQLWithSubqueryClause) o;
  
          if (recursive != null ? !recursive.equals(that.recursive) : that.recursive != null) {
              return false;
          }
          return entries.equals(that.entries);
      }
  
      @Override
      public int hashCode() {
          int result = recursive != null ? recursive.hashCode() : 0;
          result = 31 * result + entries.hashCode();
          return result;
      }
  }
  