KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > derby > impl > sql > execute > rts > RealScrollInsensitiveResultSetStatistics


1 /*
2
3    Derby - Class org.apache.derby.impl.sql.execute.rts.RealScrollInsensitiveResultSetStatistics
4
5    Licensed to the Apache Software Foundation (ASF) under one or more
6    contributor license agreements. See the NOTICE file distributed with
7    this work for additional information regarding copyright ownership.
8    The ASF licenses this file to you under the Apache License, Version 2.0
9    (the "License"); you may not use this file except in compliance with
10    the License. You may obtain a copy of the License at
11
12       http://www.apache.org/licenses/LICENSE-2.0
13
14    Unless required by applicable law or agreed to in writing, software
15    distributed under the License is distributed on an "AS IS" BASIS,
16    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17    See the License for the specific language governing permissions and
18    limitations under the License.
19
20  */
21
22 package org.apache.derby.impl.sql.execute.rts;
23
24 import org.apache.derby.iapi.services.io.StoredFormatIds;
25
26 import org.apache.derby.iapi.services.i18n.MessageService;
27 import org.apache.derby.iapi.reference.SQLState;
28
29 import org.apache.derby.iapi.services.io.FormatableHashtable;
30
31 import java.io.ObjectOutput JavaDoc;
32 import java.io.ObjectInput JavaDoc;
33 import java.io.IOException JavaDoc;
34
35 /**
36   ResultSetStatistics implemenation for ScrollInsensitiveResultSet.
37
38   @author jerry
39
40 */
41 public class RealScrollInsensitiveResultSetStatistics
42     extends RealNoPutResultSetStatistics
43 {
44
45     /* Leave these fields public for object inspectors */
46     public ResultSetStatistics childResultSetStatistics;
47     public int numFromHashTable;
48     public int numToHashTable;
49
50     // CONSTRUCTORS
51
52     /**
53      *
54      *
55      */
56     public RealScrollInsensitiveResultSetStatistics(
57                                 int numOpens,
58                                 int rowsSeen,
59                                 int rowsFiltered,
60                                 long constructorTime,
61                                 long openTime,
62                                 long nextTime,
63                                 long closeTime,
64                                 int numFromHashTable,
65                                 int numToHashTable,
66                                 int resultSetNumber,
67                                 double optimizerEstimatedRowCount,
68                                 double optimizerEstimatedCost,
69                                 ResultSetStatistics childResultSetStatistics
70                                 )
71     {
72         super(
73             numOpens,
74             rowsSeen,
75             rowsFiltered,
76             constructorTime,
77             openTime,
78             nextTime,
79             closeTime,
80             resultSetNumber,
81             optimizerEstimatedRowCount,
82             optimizerEstimatedCost
83             );
84         this.numFromHashTable = numFromHashTable;
85         this.numToHashTable = numToHashTable;
86         this.childResultSetStatistics = childResultSetStatistics;
87     }
88
89     // ResultSetStatistics methods
90
91     /**
92      * Return the statement execution plan as a String.
93      *
94      * @param depth Indentation level.
95      *
96      * @return String The statement execution plan as a String.
97      */
98     public String JavaDoc getStatementExecutionPlanText(int depth)
99     {
100         initFormatInfo(depth);
101
102         return
103             indent + MessageService.getTextMessage(
104                                         SQLState.RTS_SCROLL_INSENSITIVE_RS) +
105                 ":\n" +
106             indent + MessageService.getTextMessage(SQLState.RTS_NUM_OPENS) +
107                 " = " + numOpens + "\n" +
108             indent + MessageService.getTextMessage(SQLState.RTS_ROWS_SEEN) +
109                 " = " + rowsSeen + "\n" +
110             indent + MessageService.getTextMessage(
111                                                 SQLState.RTS_READS_FROM_HASH) +
112                 " = " + numFromHashTable + "\n" +
113             indent + MessageService.getTextMessage(
114                                                 SQLState.RTS_WRITES_TO_HASH) +
115                 " = " + numToHashTable + "\n" +
116             dumpTimeStats(indent, subIndent) + "\n" +
117             dumpEstimatedCosts(subIndent) + "\n" +
118             indent + MessageService.getTextMessage(SQLState.RTS_SOURCE_RS) +
119                 ":\n" +
120             childResultSetStatistics.getStatementExecutionPlanText(
121                                                                 sourceDepth) +
122                 "\n";
123     }
124
125     /**
126      * Return information on the scan nodes from the statement execution
127      * plan as a String.
128      *
129      * @param depth Indentation level.
130      * @param tableName if not NULL then print information for this table only
131      *
132      * @return String The information on the scan nodes from the
133      * statement execution plan as a String.
134      */
135     public String JavaDoc getScanStatisticsText(String JavaDoc tableName, int depth)
136     {
137         return childResultSetStatistics.getScanStatisticsText(tableName, depth);
138     }
139
140     // Class implementation
141
142     public String JavaDoc toString()
143     {
144         return getStatementExecutionPlanText(0);
145     }
146   public java.util.Vector JavaDoc getChildren(){
147     java.util.Vector JavaDoc children = new java.util.Vector JavaDoc();
148     children.addElement(childResultSetStatistics);
149     return children;
150   }
151     /**
152    * Format for display, a name for this node.
153      *
154      */
155   public String JavaDoc getNodeName(){
156     return MessageService.getTextMessage(SQLState.RTS_SCROLL_INSENSITIVE_RS);
157   }
158 }
159
Popular Tags