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package org.msgpack.schema;
import java.util.List;
import java.util.Map;
import java.io.IOException;
import java.util.Iterator;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import org.msgpack.*;
public class SpecificClassSchema extends ClassSchema {
private List<SpecificFieldSchema> fields;
private String namespace;
private List<String> imports;
private String fqdn;
private Constructor constructorCache;
public SpecificClassSchema(String name, List<SpecificFieldSchema> fields, String namespace, List<String> imports)
{
super(name, namespace, imports);
this.fields = fields;
if(namespace == null) {
this.fqdn = name;
} else {
this.fqdn = namespace+"."+name;
}
}
//@Override
//public String getFullName()
//{
// if(namespace == null) {
// return getName();
// } else {
// return namespace+"."+getName();
// }
//}
public List<? extends FieldSchema> getFields()
{
return fields;
}
@Override
public String getExpression()
{
StringBuffer b = new StringBuffer();
b.append("(class ");
b.append(getName());
if(namespace != null) {
b.append(" (package "+namespace+")");
}
for(SpecificFieldSchema f : fields) {
b.append(" "+f.getExpression());
}
b.append(")");
return b.toString();
}
@Override
public void pack(Packer pk, Object obj) throws IOException
{
if(obj == null) {
pk.packNil();
return;
}
if(constructorCache == null) {
cacheConstructor();
}
pk.packArray(fields.size());
for(SpecificFieldSchema f : fields) {
f.getType().pack(pk, f.getFieldValue(obj));
}
}
@Override
@SuppressWarnings("unchecked")
public Object convert(GenericObject obj)
{
if(constructorCache == null) {
cacheConstructor();
}
List<GenericObject> d = obj.asArray();
try {
Object g = constructorCache.newInstance((Object[])null);
Iterator<GenericObject> vi = d.iterator();
Iterator<SpecificFieldSchema> fi = fields.iterator();
while(fi.hasNext() && vi.hasNext()) {
SpecificFieldSchema f = fi.next();
GenericObject v = vi.next();
f.setFieldValue(g, f.getType().convert(v));
}
// leave it as uninitialized
//while(fi.hasNext()) {
// SpecificFieldSchema f = fi.next();
// g.put(f.getName(), null);
//}
return g;
} catch (InvocationTargetException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (InstantiationException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (IllegalAccessException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
}
}
private void cacheConstructor()
{
try {
Class c = Class.forName(fqdn);
int index = 0;
for(SpecificFieldSchema f : fields) {
f.cacheField(c, index++);
}
constructorCache = c.getDeclaredConstructor((Class[])null);
constructorCache.setAccessible(true);
} catch(ClassNotFoundException e) {
throw new RuntimeException("class not found: "+fqdn);
} catch (NoSuchMethodException e) {
throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
}
}
@Override
public Object newInstance()
{
if(constructorCache == null) {
cacheConstructor();
}
try {
return constructorCache.newInstance((Object[])null);
} catch (InvocationTargetException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (InstantiationException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
} catch (IllegalAccessException e) {
throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
}
}
public boolean equals(SpecificClassSchema o)
{
return (namespace != null ? namespace.equals(o.getNamespace()) : o.getNamespace() == null) &&
getName().equals(o.getName());
}
}
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