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Java Forum / General / May 2005How to store this (key1,key2, Object) ?
Is there a data type in the JDK (1.4) that allows me to do this (and also retieve) or do I have to roll my own? tks > Is there a data type in the JDK (1.4) that allows me to do this (and > also retieve) or do I have to roll my own? > > tks What about storing (key1 + "<delimiter>" + key2, Object) Thomas Thanks Thomas, this is probably the simplest way to do what I want to do >>Is there a data type in the JDK (1.4) that allows me to do this (and >>also retieve) or do I have to roll my own? [quoted text clipped - 4 lines] > > Thomas > Is there a data type in the JDK (1.4) that allows me to do this (and > also retieve) or do I have to roll my own? > > tks No and No. You could use Apache Commons Collections' MultiKeyMap <http://jakarta.apache.org/commons/collections/apidocs-COLLECTIONS_3_1/org/apache /commons/collections/map/MultiKeyMap.html> <http://jakarta.apache.org/commons/collections/>  SignatureRegards, Roland de Ruiter ___ ___ /__/ w_/ /__/ / \ /_/ / \ Thanks Roland. Can I use the MultikeyMap in a session EJB? >> Is there a data type in the JDK (1.4) that allows me to do this (and >> also retieve) or do I have to roll my own? [quoted text clipped - 6 lines] > > <http://jakarta.apache.org/commons/collections/> >>> Is there a data type in the JDK (1.4) that allows me to do this (and >>> also retieve) or do I have to roll my own? [quoted text clipped - 8 lines] > > Thanks Roland. Can I use the MultikeyMap in a session EJB? Yes, if you deploy the jar with the Commons Collections to your J2EE server and if MultiKeyMap is serializable (let me check... yes it implements java.io.Serializable) and all keys/items you store in the map are too, then I wouldn't know a reason why you couldn't. SignatureRegards, Roland de Ruiter ___ ___ /__/ w_/ /__/ / \ /_/ / \ Thanks Roland, I appreciate your quick response. Very helpful >>>> Is there a data type in the JDK (1.4) that allows me to do this (and >>>> also retieve) or do I have to roll my own? [quoted text clipped - 13 lines] > implements java.io.Serializable) and all keys/items you store in the map > are too, then I wouldn't know a reason why you couldn't. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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