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extended Type

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This commit is contained in:
Timo Westkämper 2010-08-02 21:10:48 +00:00
parent f68da31101
commit 7ada1f4bb0
5 changed files with 116 additions and 79 deletions
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93
src/main/java/com/mysema/codegen/ClassType.java Normal file
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@ -0,0 +1,93 @@
package com.mysema.codegen;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
/**
* Type represents a generic type used in code generation
*
* @author tiwe
*
* @param <T>
*/
public class ClassType<T> implements Type<T> {
private final Class<T> javaClass;
private final List<Type<?>> parameters;
public ClassType(Class<T> javaClass, List<Type<?>> parameters) {
this.javaClass = javaClass;
this.parameters = parameters;
}
public ClassType(Class<T> clazz, Type<?>... parameters) {
this(clazz, Arrays.asList(parameters));
}
@Override
public boolean equals(Object o){
if (o == this){
return true;
}else if (o instanceof ClassType<?>){
ClassType<?> t = (ClassType<?>)o;
return t.javaClass.equals(javaClass) && t.parameters.equals(parameters);
}else{
return false;
}
}
@Override
public String getGenericName() {
return getGenericName(Collections.<String>emptySet(), Collections.<String>emptySet());
}
@Override
public String getGenericName(Set<String> packages, Set<String> classes) {
if (parameters.isEmpty()){
return ClassUtils.getName(javaClass, packages, classes);
}else{
StringBuilder builder = new StringBuilder();
builder.append(ClassUtils.getName(javaClass, packages, classes));
builder.append("<");
boolean first = true;
for (Type<?> parameter : parameters){
builder.append(parameter.getGenericName(packages, classes));
if (!first){
builder.append(",");
}
first = false;
}
builder.append(">");
return builder.toString();
}
}
@Override
public String getName() {
return javaClass.getName();
}
@Override
public String getPackageName() {
return javaClass.getPackage().getName();
}
@Override
public List<Type<?>> getParameters() {
return parameters;
}
@Override
public String getSimpleName() {
return javaClass.getSimpleName();
}
@Override
public int hashCode(){
return javaClass.hashCode();
}
}

26
src/main/java/com/mysema/codegen/ClassUtils.java
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@ -30,31 +30,7 @@ public final class ClassUtils {
return cl.getName().replace('$', '.');
}
}
public static String getName(Type<?> cl){
return getName(cl, Collections.singleton("java.lang"), Collections.<String>emptySet());
}
public static String getName(Type<?> type, Set<String> packages, Set<String> classes){
if (type.getParameters().isEmpty()){
return getName(type.getJavaClass(), packages, classes);
}else{
StringBuilder builder = new StringBuilder();
builder.append(getName(type.getJavaClass(), packages, classes));
builder.append("<");
boolean first = true;
for (Type<?> parameter : type.getParameters()){
builder.append(getName(parameter, packages, classes));
if (!first){
builder.append(",");
}
first = false;
}
builder.append(">");
return builder.toString();
}
}
public static Class<?> normalize(Class<?> clazz){
if (List.class.isAssignableFrom(clazz)){
return List.class;

14
src/main/java/com/mysema/codegen/EvaluatorFactory.java
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@ -54,7 +54,7 @@ public class EvaluatorFactory {
this.compilationOptions = Arrays.asList("-classpath", classpath, "-g:none");
}
private void compile(String source, Type<?> projectionType,
private void compile(String source, Class<?> projectionType,
String[] names, Type<?>[] types, String id, Map<String,Object> constants) throws IOException {
// create source
StringWriter writer = new StringWriter();
@ -62,7 +62,7 @@ public class EvaluatorFactory {
javaw.beginClass(id, null);
String[] params = new String[names.length];
for (int i = 0; i < params.length; i++) {
params[i] = ClassUtils.getName(types[i]) + " " + names[i];
params[i] = types[i].getGenericName() + " " + names[i];
}
for (Map.Entry<String,Object> entry : constants.entrySet()){
@ -105,9 +105,9 @@ public class EvaluatorFactory {
Map<String,Object> constants) {
Type<?>[] types = new Type[classes.length];
for (int i = 0; i < types.length; i++){
types[i] = new Type(classes[i]);
types[i] = new ClassType(classes[i]);
}
return createEvaluator(source, new Type(projectionType), names, types, classes, constants);
return createEvaluator(source, projectionType, names, types, classes, constants);
}
/**
@ -123,7 +123,7 @@ public class EvaluatorFactory {
*/
public <T> Evaluator<T> createEvaluator(
String source,
Type<? extends T> projection,
Class<? extends T> projection,
String[] names,
Type<?>[] types,
Class<?>[] classes,
@ -147,7 +147,7 @@ public class EvaluatorFactory {
}
Method method = clazz.getMethod("eval", classes);
return new MethodEvaluator<T>(method, object, projection.getJavaClass());
return new MethodEvaluator<T>(method, object, projection);
} catch (ClassNotFoundException e) {
throw new CodegenException(e);
} catch (SecurityException e) {
@ -168,7 +168,7 @@ public class EvaluatorFactory {
}
protected String toId(String source, Type<?> returnType, Type<?>... types) {
protected String toId(String source, Class<?> returnType, Type<?>... types) {
StringBuilder b = new StringBuilder("Q");
b.append("_").append(source.hashCode());
b.append("_").append(returnType.getName().hashCode());

56
src/main/java/com/mysema/codegen/Type.java
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@ -1,57 +1,25 @@
package com.mysema.codegen;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
/**
* Type represents a generic type used in code generation
*
* @author tiwe
*
* @param <T>
*/
public class Type<T> {
public interface Type<T> {
String getGenericName();
private final Class<T> javaClass;
String getGenericName(Set<String> packages, Set<String> classes);
private final List<Type<?>> parameters;
public Type(Class<T> javaClass, List<Type<?>> parameters) {
this.javaClass = javaClass;
this.parameters = parameters;
}
public Type(Class<T> clazz, Type<?>... parameters) {
this(clazz, Arrays.asList(parameters));
}
public Class<T> getJavaClass() {
return javaClass;
}
String getName();
public List<Type<?>> getParameters() {
return parameters;
}
String getPackageName();
List<Type<?>> getParameters();
String getSimpleName();
public String getName() {
return javaClass.getName();
}
@Override
public int hashCode(){
return javaClass.hashCode();
}
@Override
public boolean equals(Object o){
if (o == this){
return true;
}else if (o instanceof Type<?>){
Type<?> t = (Type<?>)o;
return t.javaClass.equals(javaClass) && t.parameters.equals(parameters);
}else{
return false;
}
}
}
}

6
src/test/java/com/mysema/codegen/ComplexEvaluationTest.java
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@ -15,8 +15,8 @@ public class ComplexEvaluationTest {
@Test
@SuppressWarnings("unchecked")
public void testComplex(){Type<String> stringType = new Type<String>(String.class);
Type<List> resultType = new Type<List>(List.class, stringType);
public void testComplex(){ClassType<String> stringType = new ClassType<String>(String.class);
Type<List> resultType = new ClassType<List>(List.class, stringType);
StringBuilder source = new StringBuilder();
source.append("java.util.List<String> rv = new java.util.ArrayList<String>();\n");
source.append("for (String a : a_){\n");
@ -30,7 +30,7 @@ public class ComplexEvaluationTest {
Evaluator<List> evaluator = factory.createEvaluator(
source.toString(),
resultType,
List.class,
new String[]{"a_","b_"},
new Type[]{resultType, resultType},
new Class[]{List.class,List.class},