| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.iapi.sql.dictionary.StatisticsDescriptor |
| 4 | |
| 5 | Copyright 2001, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.iapi.sql.dictionary; |
| 22 | |
| 23 | import org.apache.derby.catalog.Statistics; |
| 24 | import org.apache.derby.catalog.UUID; |
| 25 | |
| 26 | import org.apache.derby.iapi.sql.dictionary.DataDictionary; |
| 27 | import java.sql.Timestamp; |
| 28 | |
| 29 | /** |
| 30 | * Implementation of StatisticsDescriptor. |
| 31 | * |
| 32 | */ |
| 33 | public class StatisticsDescriptor extends TupleDescriptor |
| 34 | { |
| 35 | private UUID statID; // my UUID |
| 36 | private UUID statRefID; // UUID of object for which I'm a statistic |
| 37 | private UUID statTableID; // UUID of table for which I'm a stat |
| 38 | private Timestamp statUpdateTime; // when was I last modified |
| 39 | |
| 40 | /* I for Index, T for table and such; even though right now all |
| 41 | our statistics are 'I' but who knows what we'll need later. |
| 42 | */ |
| 43 | private String statType; |
| 44 | private boolean statValid = true; // am I valid? |
| 45 | private Statistics statStat; // the real enchilada. |
| 46 | private int statColumnCount; // for how many columns?? |
| 47 | |
| 48 | public StatisticsDescriptor(DataDictionary dd, |
| 49 | UUID newUUID, |
| 50 | UUID objectUUID, |
| 51 | UUID tableUUID, |
| 52 | String type, |
| 53 | Statistics stat, |
| 54 | int colCount) |
| 55 | { |
| 56 | super (dd); |
| 57 | this.statID = newUUID; |
| 58 | this.statRefID = objectUUID; |
| 59 | this.statTableID = tableUUID; |
| 60 | this.statUpdateTime = new Timestamp(System.currentTimeMillis()); |
| 61 | this.statType = "I"; // for now only index. |
| 62 | this.statStat = stat; |
| 63 | this.statColumnCount = colCount; |
| 64 | } |
| 65 | |
| 66 | public UUID getUUID() |
| 67 | { |
| 68 | return statID; |
| 69 | } |
| 70 | |
| 71 | /*----- getter functions for rowfactory ------*/ |
| 72 | public UUID getTableUUID() { return statTableID;} |
| 73 | public UUID getReferenceID() { return statRefID; } |
| 74 | public Timestamp getUpdateTimestamp() { return statUpdateTime; } |
| 75 | public String getStatType() { return statType; } |
| 76 | public boolean isValid() { return statValid; } |
| 77 | public Statistics getStatistic() { return statStat; } |
| 78 | public int getColumnCount() { return statColumnCount; } |
| 79 | |
| 80 | public String toString() |
| 81 | { |
| 82 | return "statistics: table=" + getTableUUID().toString() + |
| 83 | ",conglomerate=" + getReferenceID() + |
| 84 | ",colCount=" + getColumnCount() + |
| 85 | ",stat=" + getStatistic(); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | |
| 90 | |
| 91 | |