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Reading all related keys from a properties file

I have in my propeties file, keys the following way:

FIRST_DATASOURCE=COM.XYZ.ABCSERVER.JDBC1

SECOND_DATASOURCE=COM.ABC.SERVER2.JDBC1

FIRST_DATASOURCE=COM.123.SERVER3.JDBC3

What is the solution to read all the keys wit _DATASOURCE and return as a string array?

Thanks in advance.

[316 byte] By [KSNSa] at [2007-11-27 0:50:38]

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# 1

Implement a custom property reader.

CeciNEstPasUnProgrammeura at 2007-7-11 23:20:51 >

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# 2

I do not understand your high level suggestion. can you Pl exaplin in detail?

KSNSa at 2007-7-11 23:20:51 >

# 3

> What is the solution to read all the keys wit> _DATASOURCE What you posted isn't a valid property file. Two keys can't have the same name. Kaj

kajbja at 2007-7-11 23:20:51 >

# 4

> I do not understand your high level suggestion. can> you Pl exaplin in detail?In short. You can't use java.util.Properties if your data looks like that.Kaj

kajbja at 2007-7-11 23:20:51 >

# 5

> I do not understand your high level suggestion. can> you Pl exaplin in detail?In detail: write a class that does what you want. A Hashmap and a few ArrayLists might help for starters.

CeciNEstPasUnProgrammeura at 2007-7-11 23:20:51 >

# 6

hI KAJBJ

sORRY FOR the typo error. The code is as follows:

FIRST_DATASOURCE=COM.XYZ.ABCSERVER.JDBC1

SECOND_DATASOURCE=COM.ABC.SERVER2.JDBC2

THIRD_DATASOURCE=COM.123.SERVER3.JDBC3

Clarification:

Is there any method available in ResourceBundle class to read the keys and get a String[ ]?

Thanks

KSNSa at 2007-7-11 23:20:51 >

# 7

> Clarification:> Is there any method available in ResourceBundle class> to read the keys and get a String[ ]?No, read the data, add it to e.g an ArrayList<String>, and call toArray when you are done reading.Kaj

kajbja at 2007-7-11 23:20:51 >

# 8

Hi KajbjThanks for the reply.reading data..?What is your idea to read and place in an array list. Can you give a sample code?Thanks

KSNSa at 2007-7-11 23:20:51 >

# 9

ArrayList<String> tmp = new ArrayList<String>();result.add(theProperties.getProperty(key1));result.add(theProperties.getProperty(key2));String[] result = tmp.toArray(new String[tmp.size()]);

kajbja at 2007-7-11 23:20:51 >

# 10

Thanks kajbj..The problem here is the datasources are added from time to time and the program should pick-up dynamically.If I hardcode for the existing available datasources, how can it handle for the future?Appreciate your thoughts.

KSNSa at 2007-7-11 23:20:51 >

# 11

> Appreciate your thoughts.Depends on what more you have in that file. You can get all keys, do a substring search and see if they match a certain pattern, then get the values for those that match.Kaj

kajbja at 2007-7-11 23:20:51 >

# 12

> Thanks kajbj..

> The problem here is the datasources are added from

> time to time and the program should pick-up

> dynamically.

> If I hardcode for the existing available datasources,

> how can it handle for the future?

> Appreciate your thoughts.

Many answer can be found by reading API

http://java.sun.com/j2se/1.4.2/docs/api/java/util/Properties.html#propertyNames()

rym82a at 2007-7-11 23:20:51 >

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