com.dslplatform.json.ExternalConverterAnalyzer Maven / Gradle / Ivy
package com.dslplatform.json;
import java.util.*;
class ExternalConverterAnalyzer {
private final Set lookedUpClasses = new HashSet();
private final ClassLoader[] classLoaders;
ExternalConverterAnalyzer(Collection classLoaders) {
this.classLoaders = classLoaders.toArray(new ClassLoader[0]);
}
synchronized boolean tryFindConverter(Class manifest, DslJson dslJson) {
final String className = manifest.getName();
if (!lookedUpClasses.add(className)) return false;
String[] converterClassNames = resolveExternalConverterClassNames(className);
for (ClassLoader cl : classLoaders) {
for (String ccn : converterClassNames) {
try {
Class converterClass = cl.loadClass(ccn);
if (!Configuration.class.isAssignableFrom(converterClass)) continue;
Configuration converter = (Configuration) converterClass.newInstance();
converter.configure(dslJson);
return true;
} catch (ClassNotFoundException ignored) {
} catch (IllegalAccessException ignored) {
} catch (InstantiationException ignored) {
}
}
}
return false;
}
private String[] resolveExternalConverterClassNames(final String fullClassName) {
int dotIndex = fullClassName.lastIndexOf('.');
if (dotIndex == -1) {
return new String[]{String.format("_%s_DslJsonConverter", fullClassName)};
}
String packageName = fullClassName.substring(0, dotIndex);
String className = fullClassName.substring(dotIndex + 1);
return new String[]{
String.format("%s._%s_DslJsonConverter", packageName, className),
String.format("dsl_json.%s._%s_DslJsonConverter", packageName, className),
String.format("dsl_json.%s.%sDslJsonConverter", packageName, className)};
}
}