BVEAggregatePlan


1   package com.daffodilwoods.daffodildb.server.sql99.dql.plan.condition;
2   
3   import com.daffodilwoods.daffodildb.server.sql99.common.*;
4   import com.daffodilwoods.daffodildb.server.sql99.expression.booleanvalueexpression.*;
5   import com.daffodilwoods.daffodildb.server.sql99.expression.booleanvalueexpression.predicates.*;
6   import com.daffodilwoods.database.resource.*;
7   
8   /**
9    * It represents the plan of aggregate condition. Aggregate condition are those
10   * condition in which  aggregate functions like sum,avg,max,min,count are present
11   * and which is solved on resultset of GroupBy. It is required in formation of plan
12   * of condition.
13   * <p>Title: </p>
14   * <p>Description: This Plan contains the AggregateCondition .
15   * <p>Copyright: Copyright (c) 2003</p>
16   * <p>Company: </p>
17   * @author Sunil Virmani
18   * @version 1.0
19   */
20  
21  public class BVEAggregatePlan implements ExecutionPlanConstants, _BVEAggregatePlan {
22    /**
23     * It represents aggregate condition which will be solved on resultset of
24     * GroupBy .
25     */
26    private booleanvalueexpression aggregateCondition;
27  
28     public BVEAggregatePlan() {
29     }
30  
31     public BVEAggregatePlan(booleanvalueexpression aggregateCondition) {
32        this.aggregateCondition = aggregateCondition;
33     }
34     /**
35      * see documentation of following method in _BVEAggregatePlan
36      * @param aggregateCondition
37      * @throws DException
38      */
39     public void setAggregateCondition(booleanvalueexpression aggregateCondition) throws DException {
40        this.aggregateCondition = aggregateCondition;
41     }
42     public booleanvalueexpression getAggregateCondition() throws DException {
43        return this.aggregateCondition;
44     }
45     /**
46      * see documentation of following method in _BVEPlan
47      * @return
48      * @throws DException
49      */
50     public int getType() throws DException {
51        return BVEConstants.BVEAGGREGATEPLAN;
52     }
53     public booleanvalueexpression getRemainingCondition() throws com.daffodilwoods.database.resource.DException {
54        return null;
55     }
56  
57     public _AllTablesJoinRelation getAllTableJoinRelation() throws com.daffodilwoods.database.resource.DException {
58        return null;
59     }
60  
61     public _BVESingleTablePlan[] getBVESingleTablePlans() throws com.daffodilwoods.database.resource.DException {
62        return null;
63     }
64  
65     public void setBVESingleTablePlans(_BVESingleTablePlan[] bveSingleTablePlans) throws DException {
66        throw new UnsupportedOperationException  ();
67     }
68  
69     public void setRemainingCondition(booleanvalueexpression remainingCondition) throws DException {
70        throw new UnsupportedOperationException  ();
71     }
72  
73     public TableDetails[] getTableDetails() throws DException {
74        throw new java.lang.UnsupportedOperationException  ("Method getTableNames() not yet implemented.");
75     }
76  
77     /**
78      * This method is required to merge passed aggregate condition with this aggregate
79      * codition with AND logical operator and resultant merged predicate is set in
80      * this aggregate condition.
81      * @param aggregateCondition
82      * @throws DException
83      */
84     public void addAggregateCondition(booleanvalueexpression aggregateCondition) throws DException {
85        this.aggregateCondition = BVEPlanMerger.addAndConditions(this.aggregateCondition, aggregateCondition);
86     }
87  
88     public String   toString() {
89        String   str = "BVEAGGREGATEPLAN";
90        if (aggregateCondition != null) {
91           str += "[" + aggregateCondition + "]";
92        }
93        return str;
94     }
95  
96  
97  }
98
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