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Add ClassSource.attemptLoadFrom method

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This method is an alternative to chaining retry calls
This commit is contained in:
Glen Husman 2014-05-14 16:40:22 -07:00
parent 324e6de284
commit e0449b2db6
1 changed files with 19 additions and 6 deletions
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25
ProtocolLib/src/main/java/com/comphenix/protocol/utility/ClassSource.java
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@ -14,7 +14,7 @@ public abstract class ClassSource {
public static ClassSource fromClassLoader() {
return fromClassLoader(ClassSource.class.getClassLoader());
}
/**
* Construct a class source from the default class loader and package.
* @param packageName - the package that is prepended to every lookup.
@ -23,7 +23,7 @@ public abstract class ClassSource {
public static ClassSource fromPackage(String packageName) {
return fromClassLoader().usingPackage(packageName);
}
/**
* Construct a class source from the given class loader.
* @param loader - the class loader.
@ -57,7 +57,20 @@ public abstract class ClassSource {
}
};
}
/**
* Retrieve a class source that will attempt lookups in each of the given sources in the order they are in the array, and return the first value that is found.
* @param sources - the class sources.
* @return A new class source.
*/
public static ClassSource attemptLoadFrom(final ClassSource... sources) {
ClassSource source = sources[0];
for(int i = 1; i < sources.length; i++){
source = source.retry(sources[i]);
}
return source;
}
/**
* Retrieve a class source that will retry failed lookups in the given source.
* @param other - the other class source.
@ -75,7 +88,7 @@ public abstract class ClassSource {
}
};
}
/**
* Retrieve a class source that prepends a specific package name to every lookup.
* @param packageName - the package name to prepend.
@ -99,7 +112,7 @@ public abstract class ClassSource {
protected static String append(String a, String b) {
boolean left = a.endsWith(".");
boolean right = b.endsWith(".");
// Only add a dot if necessary
if (left && right)
return a.substring(0, a.length() - 1) + b;
@ -108,7 +121,7 @@ public abstract class ClassSource {
else
return a + "." + b;
}
/**
* Retrieve a class by name.
* @param canonicalName - the full canonical name of the class.