|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.apache.commons.dbutils.QueryLoader
public class QueryLoader
QueryLoader
loads properties files filled with query name to
SQL mappings. It acts as a registry for sets of queries so that multiple
copies of the same queries aren't loaded into memory. This class is thread
safe.
Field Summary | |
---|---|
private static QueryLoader |
instance
The Singleton instance of this class. |
private java.util.Map |
queries
Maps query set names to Maps of their queries. |
Constructor Summary | |
---|---|
protected |
QueryLoader()
QueryLoader constructor. |
Method Summary | |
---|---|
static QueryLoader |
instance()
Return an instance of this class. |
java.util.Map |
load(java.lang.String path)
Loads a Map of query names to SQL values. |
private java.util.Map |
loadQueries(java.lang.String path)
Loads a properties file into a Map object. |
void |
unload(java.lang.String path)
Removes the queries for the given path from the cache. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
private static final QueryLoader instance
private java.util.Map queries
Constructor Detail |
---|
protected QueryLoader()
Method Detail |
---|
public static QueryLoader instance()
public java.util.Map load(java.lang.String path) throws java.io.IOException
path
- The path that the ClassLoader will use to find the file.
This is not a file system path. If you had a jarred
Queries.properties file in the com.yourcorp.app.jdbc package you would
pass "/com/yourcorp/app/jdbc/Queries.properties" to this method.
java.io.IOException
java.lang.IllegalArgumentException
- if the ClassLoader can't find a file at
the given path.private java.util.Map loadQueries(java.lang.String path) throws java.io.IOException
path
- The path that the ClassLoader will use to find the file.
java.io.IOException
public void unload(java.lang.String path)
path
- The path that the queries were loaded from.
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |