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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hadoop.hive.ql.parse;

import java.io.Serializable;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.Context;
import org.apache.hadoop.hive.ql.QueryProperties;
import org.apache.hadoop.hive.ql.exec.AbstractMapJoinOperator;
import org.apache.hadoop.hive.ql.exec.FetchTask;
import org.apache.hadoop.hive.ql.exec.JoinOperator;
import org.apache.hadoop.hive.ql.exec.ListSinkOperator;
import org.apache.hadoop.hive.ql.exec.MapJoinOperator;
import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.exec.ReduceSinkOperator;
import org.apache.hadoop.hive.ql.exec.SMBMapJoinOperator;
import org.apache.hadoop.hive.ql.exec.TableScanOperator;
import org.apache.hadoop.hive.ql.exec.Task;
import org.apache.hadoop.hive.ql.hooks.LineageInfo;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.optimizer.ppr.PartitionPruner;
import org.apache.hadoop.hive.ql.optimizer.unionproc.UnionProcContext;
import org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.AnalyzeRewriteContext;
import org.apache.hadoop.hive.ql.plan.CreateTableDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
import org.apache.hadoop.hive.ql.plan.FilterDesc.SampleDesc;
import org.apache.hadoop.hive.ql.plan.LoadFileDesc;
import org.apache.hadoop.hive.ql.plan.LoadTableDesc;
import org.apache.hadoop.hive.ql.plan.MapJoinDesc;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
import org.apache.hadoop.hive.ql.plan.TableDesc;

/**
 * Parse Context: The current parse context. This is passed to the optimizer
 * which then transforms the operator tree using the parse context. All the
 * optimizations are performed sequentially and then the new parse context
 * populated. Note that since the parse context contains the operator tree, it
 * can be easily retrieved by the next optimization step or finally for task
 * generation after the plan has been completely optimized.
 *
 **/

public class ParseContext {

  private HashMap opToPartPruner;
  private HashMap opToPartList;
  private HashMap opToSamplePruner;
  private Map> opToPartToSkewedPruner;
  private HashMap> topOps;
  private Set joinOps;
  private Set mapJoinOps;
  private Set smbMapJoinOps;
  private List reduceSinkOperatorsAddedByEnforceBucketingSorting;
  private HashMap nameToSplitSample;
  private List loadTableWork;
  private List loadFileWork;
  private Context ctx;
  private HiveConf conf;
  private HashMap idToTableNameMap;
  private int destTableId;
  private UnionProcContext uCtx;
  private List> listMapJoinOpsNoReducer; // list of map join
  // operators with no
  // reducer
  private Map prunedPartitions;
  private Map viewAliasToInput;

  /**
   * The lineage information.
   */
  private LineageInfo lInfo;

  private GlobalLimitCtx globalLimitCtx;

  private HashSet semanticInputs;
  private List> rootTasks;

  private FetchTask fetchTask;
  private QueryProperties queryProperties;

  private TableDesc fetchTableDesc;
  private Operator fetchSource;
  private ListSinkOperator fetchSink;

  private AnalyzeRewriteContext analyzeRewrite;
  private CreateTableDesc createTableDesc;


  public ParseContext() {
  }

  /**
   * @param conf
   * @param qb
   *          current QB
   * @param ast
   *          current parse tree
   * @param opToPartPruner
   *          map from table scan operator to partition pruner
   * @param opToPartList
   * @param topOps
   *          list of operators for the top query
   * @param opParseCtx
   *          operator parse context - contains a mapping from operator to
   *          operator parse state (row resolver etc.)
   * @param joinOps
   *          context needed join processing (map join specifically)
   * @param loadTableWork
   *          list of destination tables being loaded
   * @param loadFileWork
   *          list of destination files being loaded
   * @param ctx
   *          parse context
   * @param idToTableNameMap
   * @param uCtx
   * @param destTableId
   * @param listMapJoinOpsNoReducer
   *          list of map join operators with no reducer
   * @param groupOpToInputTables
   * @param prunedPartitions
   * @param opToSamplePruner
   *          operator to sample pruner map
   * @param globalLimitCtx
   * @param nameToSplitSample
   * @param rootTasks
   */
  public ParseContext(
      HiveConf conf,
      HashMap opToPartPruner,
      HashMap opToPartList,
      HashMap> topOps,
      Set joinOps,
      Set smbMapJoinOps,
      List loadTableWork, List loadFileWork,
      Context ctx, HashMap idToTableNameMap, int destTableId,
      UnionProcContext uCtx, List> listMapJoinOpsNoReducer,
      Map prunedPartitions,
      HashMap opToSamplePruner,
      GlobalLimitCtx globalLimitCtx,
      HashMap nameToSplitSample,
      HashSet semanticInputs, List> rootTasks,
      Map> opToPartToSkewedPruner,
      Map viewAliasToInput,
      List reduceSinkOperatorsAddedByEnforceBucketingSorting,
      AnalyzeRewriteContext analyzeRewrite, CreateTableDesc createTableDesc,
      QueryProperties queryProperties) {
    this.conf = conf;
    this.opToPartPruner = opToPartPruner;
    this.opToPartList = opToPartList;
    this.joinOps = joinOps;
    this.smbMapJoinOps = smbMapJoinOps;
    this.loadFileWork = loadFileWork;
    this.loadTableWork = loadTableWork;
    this.topOps = topOps;
    this.ctx = ctx;
    this.idToTableNameMap = idToTableNameMap;
    this.destTableId = destTableId;
    this.uCtx = uCtx;
    this.listMapJoinOpsNoReducer = listMapJoinOpsNoReducer;
    this.prunedPartitions = prunedPartitions;
    this.opToSamplePruner = opToSamplePruner;
    this.nameToSplitSample = nameToSplitSample;
    this.globalLimitCtx = globalLimitCtx;
    this.semanticInputs = semanticInputs;
    this.rootTasks = rootTasks;
    this.opToPartToSkewedPruner = opToPartToSkewedPruner;
    this.viewAliasToInput = viewAliasToInput;
    this.reduceSinkOperatorsAddedByEnforceBucketingSorting =
        reduceSinkOperatorsAddedByEnforceBucketingSorting;
    this.analyzeRewrite = analyzeRewrite;
    this.createTableDesc = createTableDesc;
    this.queryProperties = queryProperties;
  }

  /**
   * @return the context
   */
  public Context getContext() {
    return ctx;
  }

  /**
   * @param ctx
   *          the context to set
   */
  public void setContext(Context ctx) {
    this.ctx = ctx;
  }

  /**
   * @return the hive conf
   */
  public HiveConf getConf() {
    return conf;
  }

  /**
   * @param conf
   *          the conf to set
   */
  public void setConf(HiveConf conf) {
    this.conf = conf;
  }

  /**
   * @return the opToPartPruner
   */
  public HashMap getOpToPartPruner() {
    return opToPartPruner;
  }

  /**
   * @param opToPartPruner
   *          the opToPartPruner to set
   */
  public void setOpToPartPruner(
      HashMap opToPartPruner) {
    this.opToPartPruner = opToPartPruner;
  }

  public HashMap getOpToPartList() {
    return opToPartList;
  }

  public List getReduceSinkOperatorsAddedByEnforceBucketingSorting() {
    return reduceSinkOperatorsAddedByEnforceBucketingSorting;
  }

  public void setReduceSinkOperatorsAddedByEnforceBucketingSorting(
      List reduceSinkOperatorsAddedByEnforceBucketingSorting) {
    this.reduceSinkOperatorsAddedByEnforceBucketingSorting =
        reduceSinkOperatorsAddedByEnforceBucketingSorting;
  }

  /**
   * @return the topOps
   */
  public HashMap> getTopOps() {
    return topOps;
  }

  /**
   * @param topOps
   *          the topOps to set
   */
  public void setTopOps(HashMap> topOps) {
    this.topOps = topOps;
  }

  public HashMap getNameToSplitSample() {
    return nameToSplitSample;
  }

  public void setNameToSplitSample(HashMap nameToSplitSample) {
    this.nameToSplitSample = nameToSplitSample;
  }

  /**
   * @return the loadTableWork
   */
  public List getLoadTableWork() {
    return loadTableWork;
  }

  /**
   * @param loadTableWork
   *          the loadTableWork to set
   */
  public void setLoadTableWork(List loadTableWork) {
    this.loadTableWork = loadTableWork;
  }

  /**
   * @return the loadFileWork
   */
  public List getLoadFileWork() {
    return loadFileWork;
  }

  /**
   * @param loadFileWork
   *          the loadFileWork to set
   */
  public void setLoadFileWork(List loadFileWork) {
    this.loadFileWork = loadFileWork;
  }

  public HashMap getIdToTableNameMap() {
    return idToTableNameMap;
  }

  public void setIdToTableNameMap(HashMap idToTableNameMap) {
    this.idToTableNameMap = idToTableNameMap;
  }

  public int getDestTableId() {
    return destTableId;
  }

  public void setDestTableId(int destTableId) {
    this.destTableId = destTableId;
  }

  public UnionProcContext getUCtx() {
    return uCtx;
  }

  public void setUCtx(UnionProcContext uCtx) {
    this.uCtx = uCtx;
  }

  /**
   * @return the joinOps
   */
  public Set getJoinOps() {
    return joinOps;
  }

  /**
   * @param joinOps
   *          the joinOps to set
   */
  public void setJoinOps(Set joinOps) {
    this.joinOps = joinOps;
  }

  /**
   * @return the listMapJoinOpsNoReducer
   */
  public List> getListMapJoinOpsNoReducer() {
    return listMapJoinOpsNoReducer;
  }

  /**
   * @param listMapJoinOpsNoReducer
   *          the listMapJoinOpsNoReducer to set
   */
  public void setListMapJoinOpsNoReducer(
      List> listMapJoinOpsNoReducer) {
    this.listMapJoinOpsNoReducer = listMapJoinOpsNoReducer;
  }

  /**
   * @return the opToSamplePruner
   */
  public HashMap getOpToSamplePruner() {
    return opToSamplePruner;
  }

  /**
   * @param opToSamplePruner
   *          the opToSamplePruner to set
   */
  public void setOpToSamplePruner(
      HashMap opToSamplePruner) {
    this.opToSamplePruner = opToSamplePruner;
  }

  /**
   * @return pruned partition map
   */
  public Map getPrunedPartitions() {
    return prunedPartitions;
  }

  /**
   * @param prunedPartitions
   */
  public void setPrunedPartitions(
      Map prunedPartitions) {
    this.prunedPartitions = prunedPartitions;
  }

  /**
   * Sets the lineage information.
   *
   * @param lInfo The lineage information.
   */
  public void setLineageInfo(LineageInfo lInfo) {
    this.lInfo = lInfo;
  }

  /**
   * Gets the associated lineage information.
   *
   * @return LineageInfo
   */
  public LineageInfo getLineageInfo() {
    return lInfo;
  }

  public Set getMapJoinOps() {
    return mapJoinOps;
  }

  public void setMapJoinOps(Set mapJoinOps) {
    this.mapJoinOps = mapJoinOps;
  }

  public Set getSmbMapJoinOps() {
    return smbMapJoinOps;
  }

  public void setSmbMapJoinOps(Set smbMapJoinOps) {
    this.smbMapJoinOps = smbMapJoinOps;
  }

  public GlobalLimitCtx getGlobalLimitCtx() {
    return globalLimitCtx;
  }

  public void setGlobalLimitCtx(GlobalLimitCtx globalLimitCtx) {
    this.globalLimitCtx = globalLimitCtx;
  }

  public HashSet getSemanticInputs() {
    return semanticInputs;
  }

  public void replaceRootTask(Task rootTask,
                              List> tasks) {
    this.rootTasks.remove(rootTask);
    this.rootTasks.addAll(tasks);
  }

  public FetchTask getFetchTask() {
    return fetchTask;
  }

  public void setFetchTask(FetchTask fetchTask) {
    this.fetchTask = fetchTask;
  }

  public PrunedPartitionList getPrunedPartitions(String alias, TableScanOperator ts)
      throws SemanticException {
    PrunedPartitionList partsList = opToPartList.get(ts);
    if (partsList == null) {
      partsList = PartitionPruner.prune(ts, this, alias);
      opToPartList.put(ts, partsList);
    }
    return partsList;
  }

  /**
   * @return the opToPartToSkewedPruner
   */
  public Map> getOpToPartToSkewedPruner() {
    return opToPartToSkewedPruner;
  }

  /**
   * @param opToPartToSkewedPruner
   *          the opToSkewedPruner to set
   */
  public void setOpPartToSkewedPruner(
      HashMap> opToPartToSkewedPruner) {
    this.opToPartToSkewedPruner = opToPartToSkewedPruner;
  }

  public Map getViewAliasToInput() {
    return viewAliasToInput;
  }

  public QueryProperties getQueryProperties() {
    return queryProperties;
  }

  public void setQueryProperties(QueryProperties queryProperties) {
    this.queryProperties = queryProperties;
  }

  public TableDesc getFetchTableDesc() {
    return fetchTableDesc;
  }

  public void setFetchTabledesc(TableDesc fetchTableDesc) {
    this.fetchTableDesc = fetchTableDesc;
  }

  public Operator getFetchSource() {
    return fetchSource;
  }

  public void setFetchSource(Operator fetchSource) {
    this.fetchSource = fetchSource;
  }

  public ListSinkOperator getFetchSink() {
    return fetchSink;
  }

  public void setFetchSink(ListSinkOperator fetchSink) {
    this.fetchSink = fetchSink;
  }

  public AnalyzeRewriteContext getAnalyzeRewrite() {
    return this.analyzeRewrite;
  }

  public void setAnalyzeRewrite(AnalyzeRewriteContext analyzeRewrite) {
    this.analyzeRewrite = analyzeRewrite;
  }

  public CreateTableDesc getCreateTable() {
    return this.createTableDesc;
  }

  public void setCreateTable(CreateTableDesc createTableDesc) {
    this.createTableDesc = createTableDesc;
  }

}