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Fix generics and some formatting #59

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64 changes: 23 additions & 41 deletions rwx-processor/src/main/resources/groovy/Parser.groovy
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Original file line number Diff line number Diff line change
Expand Up @@ -18,65 +18,47 @@ import java.util.Map;
public class ${simpleClassName}_Parser implements Parser<${simpleClassName}>
{
@Override
@SuppressWarnings( "unchecked" )
public ${simpleClassName} parse( Object object )
{
${simpleClassName} ret = new ${simpleClassName}();
Object val;

<% if (structPart == true) { %>
Map<String, Object> map = (Map) object;
<% params.each { %>
<% if (structPart == true) { %>
Map<?, ?> map = (Map<?, ?>) object;
<% params.each { %>
val = map.get( "${it.key}" );
if ( val != null )
{
{
val = nullifyNil( val );
<% if (it.converter != null) { %>
ret.${it.methodName}( new ${it.converter}().parse( val ) );
<% } else if (it.actionClass == null) { %>
<% if (it.isPrimitive) { %>if ( val != null ) <% } %>ret.${it.methodName}( (${it.type}) <% if (it.isUpgradeCast) { %>upgradeCast( ${it.type}.class, val )<% } else { %>val<% } %> );
<% } else { %>
<% if (it.contains) { %>
List<${it.elementClass}> ${it.localListVariableName} = new ArrayList<>();
for ( Object obj : ( List<Object> ) val )
<% if (it.converter != null) { %> ret.${it.methodName}( new ${it.converter}().parse( val ) );
<% } else if (it.actionClass == null) { %> <% if (it.isPrimitive) { %>if ( val != null ) <% } %>ret.${it.methodName}( <% if (it.type != 'java.lang.Object') { %>(${it.type}) <% } %><% if (it.isUpgradeCast) { %>upgradeCast( ${it.type}.class, val )<% } else { %>val<% } %> );
<% } else if (it.contains) { %> List<${it.elementClass}> ${it.localListVariableName} = new ArrayList<>();
for ( Object obj : (List<?>) val )
{
${it.localListVariableName}.add( new ${it.actionClass}().parse( obj ) );
}
ret.${it.methodName}( ${it.localListVariableName} );
<% } else { %>
ret.${it.methodName}( new ${it.actionClass}().parse( val ) );
<% } %>
<% } %>
}
<% } %>
<% } else { %>
<% if (arrayPart == true) { %>
List<Object> list = (List)object;
<% } else { %>
List<Object> list = ((RpcObject) object).getParams();
<% } %>
<% params.eachWithIndex { it, idx -> %>
<% } else { %> ret.${it.methodName}( new ${it.actionClass}().parse( val ) );
<% } %> }
<% } %><% } else { %><% if (arrayPart == true) { %>
List<?> list = (List<?>) object;
<% } else { %>
List<?> list = ((RpcObject) object).getParams();
<% } %><% params.eachWithIndex { it, idx -> %>
val = list.get( ${idx} );
if ( val != null && !isNil( val ) )
{
<% if (it.converter != null) { %>
ret.${it.methodName}( new ${it.converter}().parse( val ) );
<% } else if (it.actionClass == null) { %>
ret.${it.methodName}( (${it.type}) <% if (it.isUpgradeCast) { %>upgradeCast( ${it.type}.class, val )<% } else { %>val<% } %> );
<% } else { %>
<% if (it.contains) { %>
List<${it.elementClass}> ${it.localListVariableName} = new ArrayList<>();
for ( Object obj : ( List<Object> ) val )
<% if (it.converter != null) { %> ret.${it.methodName}( new ${it.converter}().parse( val ) );
<% } else if (it.actionClass == null) { %> ret.${it.methodName}( <% if (it.type != 'java.lang.Object') { %>(${it.type}) <% } %><% if (it.isUpgradeCast) { %>upgradeCast( ${it.type}.class, val )<% } else { %>val<% } %> );
<% } else if (it.contains) { %> List<${it.elementClass}> ${it.localListVariableName} = new ArrayList<>();
for ( Object obj : (List<?>) val )
{
${it.localListVariableName}.add( new ${it.actionClass}().parse( obj ) );
}
ret.${it.methodName}( ${it.localListVariableName} );
<% } else { %>
ret.${it.methodName}( new ${it.actionClass}().parse( val ) );
<% } %>
<% } %>
}
<% } %>
<% } %>
<% } else { %> ret.${it.methodName}( new ${it.actionClass}().parse( val ) );
<% } %> }
<% } %><% } %>
return ret;
}
}
15 changes: 5 additions & 10 deletions rwx-processor/src/main/resources/groovy/Registry.groovy
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Expand Up @@ -2,22 +2,17 @@ package ${packageName};

import org.commonjava.rwx.core.Registry;

<% imports.each { %>
import ${it};<% } %>

<% imports.each { %>import ${it};
<% } %>
/**
* Created by RWX AnnoProcessor.
*/
public class ${registrySimpleClassName}
public final class ${registrySimpleClassName}
extends Registry
{

public ${registrySimpleClassName}()
{
<% classes.each { %>
setRenderer( ${it}.class, new ${it}_Renderer() );
<% classes.each { %> setRenderer( ${it}.class, new ${it}_Renderer() );
setParser( ${it}.class, new ${it}_Parser() );
<% } %>
}

<% } %> }
}
74 changes: 23 additions & 51 deletions rwx-processor/src/main/resources/groovy/Renderer.groovy
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Expand Up @@ -19,76 +19,48 @@ public class ${simpleClassName}_Renderer implements Renderer<${simpleClassName}>
@Override
public Object render( ${simpleClassName} object )
{
<% if (request == true) { %>
MethodCall methodCall = new MethodCall();
<% if (request == true) { %> MethodCall methodCall = new MethodCall();
methodCall.setMethodName( "${methodName}" );
<% } else if (response == true) { %>
MethodResponse methodResponse = new MethodResponse();
<% } %>

<% if (structPart == true) { %>
Map<String, Object> map = new HashMap<>();
<% params.each { %>
<% if (it.converter != null) { %>
map.put( "${it.key}", new ${it.converter}().render( object.${it.methodName}() ) );
<% } else if (it.actionClass == null) { %>
map.put( "${it.key}", object.${it.methodName}() );
<% } else { %>
if ( object.${it.methodName}() != null )
<% } else if (response == true) { %> MethodResponse methodResponse = new MethodResponse();

<% } %><% if (structPart == true) { %> Map<String, Object> map = new HashMap<>();
<% params.each { %><% if (it.converter != null) { %> map.put( "${it.key}", new ${it.converter}().render( object.${it.methodName}() ) );
<% } else if (it.actionClass == null) { %> map.put( "${it.key}", object.${it.methodName}() );
<% } else { %> if ( object.${it.methodName}() != null )
{
<% if (it.contains) { %>
List<Object> ${it.localListVariableName} = new ArrayList<>( );
<% if (it.contains) { %> List<Object> ${it.localListVariableName} = new ArrayList<>();
for ( ${it.elementClass} obj : object.${it.methodName}() )
{
${it.localListVariableName}.add( new ${it.actionClass}().render( obj ) );
}
map.put( "${it.key}", ${it.localListVariableName} );
<% } else { %>
map.put( "${it.key}", new ${it.actionClass}().render( object.${it.methodName}() ) );
<% } %>
}
<% } %>
<% } %>
<% } else { %>
List<Object> list = new ArrayList<>();
<% params.each { %>
<% if (it.converter != null) { %>
list.add( new ${it.converter}().render( object.${it.methodName}() ) );
<% } else if (it.actionClass == null) { %>
list.add( object.${it.methodName}() );
<% } else { %>
if ( object.${it.methodName}() != null )
<% } else { %> map.put( "${it.key}", new ${it.actionClass}().render( object.${it.methodName}() ) );
<% } %> }
<% } %><% } %><% } else { %> List<Object> list = new ArrayList<>();
<% params.each { %><% if (it.converter != null) { %> list.add( new ${it.converter}().render( object.${it.methodName}() ) );
<% } else if (it.actionClass == null) { %> list.add( object.${it.methodName}() );
<% } else { %> if ( object.${it.methodName}() != null )
{
<% if (it.contains) { %>
List<Object> ${it.localListVariableName} = new ArrayList<>( );
<% if (it.contains) { %> List<Object> ${it.localListVariableName} = new ArrayList<>();
for ( ${it.elementClass} obj : object.${it.methodName}() )
{
${it.localListVariableName}.add( new ${it.actionClass}().render( obj ) );
}
list.add( ${it.localListVariableName} );
<% } else { %>
list.add( new ${it.actionClass}().render( object.${it.methodName}() ) );
<% } %>
}
<% } else { %> list.add( new ${it.actionClass}().render( object.${it.methodName}() ) );
<% } %> }
else
{
list.add( null );
}
<% } %>
<% } %>
<% } %>

<% if (request == true) { %>
methodCall.setParams( list );
<% } %><% } %><% } %>
<% if (request == true) { %> methodCall.setParams( list );
return methodCall;
<% } else if (response == true) { %>
methodResponse.setParams( list );
<% } else if (response == true) { %> methodResponse.setParams( list );
return methodResponse;
<% } else if (arrayPart == true) { %>
return list;
<% } else { %>
map.values().removeAll( java.util.Collections.singleton( null ) );
<% } else if (arrayPart == true) { %> return list;
<% } else { %> map.values().removeAll( java.util.Collections.singleton( null ) );
return map;
<% } %>
}
<% } %> }
}
2 changes: 1 addition & 1 deletion rwx-test/pom.xml
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Expand Up @@ -58,5 +58,5 @@
</plugin>
</plugins>
</build>

</project>
4 changes: 2 additions & 2 deletions rwx-test/src/main/java/org/commonjava/rwx/test/jira/JiraServerInfoConverter.java
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@@ -1,4 +1,4 @@
/**
/*
* Copyright (C) 2010 Red Hat, Inc. (http://github.com/Commonjava/commonjava)
*
* Licensed under the Apache License, Version 2.0 (the "License");
Expand Down Expand Up @@ -29,7 +29,7 @@ public class JiraServerInfoConverter implements Converter<AbstractJiraServerInfo
@Override
public AbstractJiraServerInfo parse( Object object )
{
Map<String, Object> map = (Map<String, Object>) object;
Map<?, ?> map = (Map<?, ?>) object;

@rnc rnc Aug 24, 2026

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I still think it would be better to use @SuppressWarnings( "unchecked" ) here rather than the wildcard parameterised type ; this would then match your changes in e.g. Registry.java and ParseUtils.

@dwalluck dwalluck Aug 24, 2026 •
edited
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I think I have a simple way to explain it. The problem is where the cast is (first line vs. second line):

Wrong way:

Map<String, Integer> map = (Map<String, Integer>) obj; // wrong: unchecked cast
Integer i = map.get( "x" ); // compiler can't verify this, can throw ClassCastException

Right way:

Map<?, ?> map = (Map<?, ?>) obj;
Integer i = (Integer) map.get( "x" ) // checked cast here

When I use @SuppressWarnings("unchecked") in Registry and ParseUtils, that was where it was safe.

In other words, cast the get not the Map.

@dwalluck dwalluck Aug 24, 2026

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See also #48.

String version = (String) map.get( "version" );
String baseUrl = (String) map.get( "baseUrl" );
String buildDate = (String) map.get( "buildDate" );
Expand Down
6 changes: 3 additions & 3 deletions rwx-test/src/test/java/org/commonjava/rwx/test/koji/KojiMultiCallTest.java
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Expand Up @@ -167,15 +167,15 @@ private void assertMultiCallResponse( MultiCallResponse response )
assertEquals( "org.dashbuilder-dashbuilder-parent-metadata", kojiBuildInfo.getPackageName() );

// if we do not know the type, access Map directly
Map<String, Object> data1Map = (Map<String, Object>) data1;
Map<?, ?> data1Map = (Map<?, ?>) data1;

@rnc rnc Aug 24, 2026

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Can you explain why you've gone from a typed string/object to wildcards?

@dwalluck dwalluck Aug 24, 2026

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The goal was to correct the code and fix about 50+ compiler warnings (that show up in IDEA, but only 1 "uses unchecked or unsafe operations" shows in console without -Xlint:all).

Map<?, ?> data1Map isn't untyped. A raw Map would be untyped. But, (Map<String, Object>) is unchecked. The ? removes the bad unchecked operations while keeping the compiler checks. (Map<?, ?>) is a checked cast which is strictly better than an unchecked cast, all without losing information. The @SuppressWarnings is for suppressing when we can't get rid of the unchecked cast.

I tried to follow best practices of Effective Java https://www.informit.com/articles/article.aspx?p=2861454&seqNum=2.

Eliminate every unchecked warning that you can. If you eliminate all warnings, you are assured that your code is typesafe, which is a very good thing. It means that you won’t get a ClassCastException at runtime, and it increases your confidence that your program will behave as you intended.

@rnc rnc Aug 24, 2026

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Changing to I think is simply saying we have no ideas about type so there are no possible warnings to throw. This means then any .get operations aren't checked versus the original.

@dwalluck dwalluck Aug 24, 2026 •
edited
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Since the (Map<String, Object>) data1 is an unchecked cast it can never add a check since that's what unchecked means.

It can do nothing except possibly raise a ClassCastException. Here,get's key is always Object and V is Object, so they are both just Object.

The only feature it's adding is a theoretical exception and no check. That's why I quoted Effective Java before.

assertEquals( 48475, data1Map.get( "package_id" ) );
assertEquals( 513598, data1Map.get( "build_id" ) );
assertEquals( "org.dashbuilder-dashbuilder-parent-metadata", data1Map.get( "package_name" ) );


// b. verify response from listTags call

List<Object> data2List = (List<Object>) data2;
List<?> data2List = (List<?>) data2;
assertEquals( 4, data2List.size() );

// if we know the type (KojiTagInfo) in the list, parse the element to it
Expand All @@ -186,7 +186,7 @@ private void assertMultiCallResponse( MultiCallResponse response )
// if we do not know the type, access List directly
Object data2_1 = data2List.get( 0 );
assertTrue( data2_1 instanceof Map );
Map<String, Object> data2_1Map = (Map<String, Object>) data2_1;
Map<?, ?> data2_1Map = (Map<?, ?>) data2_1;
assertEquals( "jb-bxms-6.3-candidate", data2_1Map.get( "name" ) );
assertEquals( 8829, data2_1Map.get( "id" ) );
}
Expand Down
5 changes: 3 additions & 2 deletions rwx/src/main/java/org/commonjava/rwx/core/Registry.java
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@@ -1,4 +1,4 @@
/**
/*
* Copyright (C) 2010 Red Hat, Inc. (http://github.com/Commonjava/commonjava)
*
* Licensed under the Apache License, Version 2.0 (the "License");
Expand Down Expand Up @@ -49,7 +49,8 @@ public <T> T parseAs( Object o, Class<T> type )

public Object renderTo( Object obj )
{
Renderer renderer = rendererMap.get( obj.getClass() );
@SuppressWarnings( "unchecked" )
Renderer<Object> renderer = (Renderer<Object>) rendererMap.get( obj.getClass() );
if ( renderer == null )
{
throw new IllegalArgumentException( "Renderer not found for " + obj.getClass() );
Expand Down
11 changes: 9 additions & 2 deletions rwx/src/main/java/org/commonjava/rwx/util/ParseUtils.java
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@@ -1,4 +1,4 @@
/**
/*
* Copyright (C) 2010 Red Hat, Inc. (http://github.com/Commonjava/commonjava)
*
* Licensed under the Apache License, Version 2.0 (the "License");
Expand Down Expand Up @@ -61,7 +61,14 @@ public static Object upgradeCast( Class<?> clazz, Object value )

private static <T> Class<T> wrap( Class<T> c )
{
return c.isPrimitive() ? (Class<T>) PRIMITIVES_TO_WRAPPERS.get( c ) : c;
if ( !c.isPrimitive() )
{
return c;
}

@SuppressWarnings( "unchecked" )
Class<T> wrapped = (Class<T>) PRIMITIVES_TO_WRAPPERS.get( c );
return wrapped;
}

private static final Map<Class<?>, Class<?>> PRIMITIVES_TO_WRAPPERS = new HashMap<>();
Expand Down
20 changes: 10 additions & 10 deletions rwx/src/main/java/org/commonjava/rwx/util/RenderUtils.java
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Expand Up @@ -61,19 +61,19 @@ else if ( rpcObject instanceof MethodResponse )
}
else if ( rpcObject instanceof Map<?, ?> )
{
return toStructPartXMLString( (Map<String, Object>) rpcObject );
return toStructPartXMLString( (Map<?, ?>) rpcObject );
}
else if ( rpcObject instanceof List )
{
return toArrayPartXMLString( (List<Object>) rpcObject );
return toArrayPartXMLString( (List<?>) rpcObject );
}
else
{
throw new XmlRpcException( "Not supported, " + rpcObject.getClass() );
}
}

private static String toStructPartXMLString( Map<String, Object> rpcObject ) throws XmlRpcException
private static String toStructPartXMLString( Map<?, ?> rpcObject ) throws XmlRpcException
{
StringWriter result = new StringWriter();
try
Expand All @@ -89,7 +89,7 @@ private static String toStructPartXMLString( Map<String, Object> rpcObject ) thr
return result.toString();
}

private static String toArrayPartXMLString( List<Object> rpcObject ) throws XmlRpcException
private static String toArrayPartXMLString( List<?> rpcObject ) throws XmlRpcException
{
StringWriter result = new StringWriter();
try
Expand Down Expand Up @@ -173,11 +173,11 @@ private static void writeValue( XMLStreamWriter w, Object object ) throws XMLStr

if ( object instanceof List )
{
writeArray( w, (List<Object>) object );
writeArray( w, (List<?>) object );
}
else if ( object instanceof Map<?, ?> )
{
writeStruct( w, (Map<String, Object>) object );
writeStruct( w, (Map<?, ?>) object );
}
else
{
Expand All @@ -187,7 +187,7 @@ else if ( object instanceof Map<?, ?> )
w.writeEndElement();
}

private static void writeArray( XMLStreamWriter w, List<Object> objects )
private static void writeArray( XMLStreamWriter w, List<?> objects )
throws XMLStreamException, CoercionException
{
w.writeStartElement( ARRAY );
Expand All @@ -200,15 +200,15 @@ private static void writeArray( XMLStreamWriter w, List<Object> objects )
w.writeEndElement();
}

private static void writeStruct( XMLStreamWriter w, Map<String, Object> map )
private static void writeStruct( XMLStreamWriter w, Map<?, ?> map )
throws XMLStreamException, CoercionException
{
w.writeStartElement( STRUCT );
for ( Map.Entry<String, Object> entry : map.entrySet() )
for ( Map.Entry<?, ?> entry : map.entrySet() )
{
w.writeStartElement( MEMBER );
w.writeStartElement( NAME );
w.writeCharacters( entry.getKey() );
w.writeCharacters( (String) entry.getKey() );
w.writeEndElement();
writeValue( w, entry.getValue() );
w.writeEndElement();
Expand Down
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