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Java > Open Source Codes > com > jcorporate > expresso > core > dbobj > MultiDBObjectTransaction


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64
65 package com.jcorporate.expresso.core.dbobj;
66
67 import com.jcorporate.expresso.core.db.DBConnection;
68 import com.jcorporate.expresso.core.db.DBException;
69
70
71 /**
72  * A MultiDBObjectTransaction is a group of dbobjects that are "related" - e.g. defined
73  * as being part of a foreign-key/primary-key relationship. This may be
74  * master/detail or a more complex relationship, but it can be expressed as a
75  * "join" operation between the tables.
76  * <p/>
77  * After establishing the relationships between the objects the MultiDBObject
78  * can have search criteria set for it & searchAndRetrieve operations done just
79  * like a 'regular' DBObject, but these operations affect the entire related
80  * group of objects. At the moment, MultiDBObjects are read-only, though that
81  * may change in the future.
82  * <p/>
83  * Creation date: (10-12-2003 11:32:03 AM)
84  * author Yves Henri AMAIZO
85  */
86 public class MultiDBObjectTransaction extends MultiDBObject {
87
88     /**
89      * MultiDBObjectTransaction constructor comment.
90      */
91     public MultiDBObjectTransaction()
92             throws DBException {
93         super();
94
95     } /* MultiDBObjectTransaction() */
96
97     /**
98      * Return the name of the context/database connection that this DB object is
99      * using. If none is set, then we are using the "default" database/context.
100      *
101      * @return the name of the datacontext
102      */
103     public synchronized String JavaDoc getDBName() {
104         return super.getDBName();
105     } /* getDBName() */
106
107
108     /**
109      * Set the database name/context for this multi db object. If setDBName is not called,
110      * the "default" db name and context is used. See
111      * com.jcorporate.expresso.core.misc.ConfigManager for information about multiple
112      * contexts. Note that setting a db/context name only affects the object when it
113      * allocates it's own db connections - if a specific connection is used (via the
114      * setConnection(DBConnection) method) then that connection must be already
115      * associated with the correct db/context.
116      *
117      * @param newOther The name of the context or database to use
118      */
119     public synchronized void setDBName(String JavaDoc newOther)
120             throws DBException {
121         super.setDBName(newOther);
122     } /* setDBName(String) */
123
124
125     /**
126      * @return
127      */
128     public DBConnection getConnection() {
129         return localConnection;
130     }
131
132     /**
133      * @param connection
134      */
135     public void setConnection(DBConnection connection) {
136         localConnection = connection;
137     }
138
139 } /* MultiDBObjectTransaction */
140
141
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