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feat: add root object #605

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Merged
merged 2 commits into from
Apr 3, 2025
Merged

feat: add root object #605

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dbb4af3
feat: add root object
Mar 26, 2025
e6428f2
feat: code style
Apr 3, 2025
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33 changes: 32 additions & 1 deletion ...ic/arex-dynamic-common/src/main/java/io/arex/inst/dynamic/common/ExpressionParseUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -43,12 +43,16 @@ public static String generateKey(Method method, Object[] args, String keyExpress
return null;
}


try {
String[] parameterNames = NAME_DISCOVERER.getParameterNames(method);
if (parameterNames == null || args.length != parameterNames.length) {
return null;
}
EvaluationContext context = new StandardEvaluationContext();

MethodRootObject rootObject = new MethodRootObject(method, args);

EvaluationContext context = new StandardEvaluationContext(rootObject);
for (int i = 0; i < args.length; i++) {
context.setVariable(parameterNames[i], args[i]);
}
Expand All @@ -62,6 +66,33 @@ public static String generateKey(Method method, Object[] args, String keyExpress
}
}

/**
* the root object used during the expression evaluation. It contains the method and its
* arguments.
*/
private static class MethodRootObject {
private final Method method;
private final Object[] args;

private MethodRootObject(Method method, Object[] args) {
this.method = method;
this.args = args;
}

public String getMethodName() {
return method.getName();
}

public Method getMethod() {
return this.method;
}

public Object[] getArgs() {
return this.args;
}

}

public static String replaceToExpression(Method method, String additionalSignature) {
if (method == null || StringUtil.isEmpty(additionalSignature)) {
return null;
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36 changes: 36 additions & 0 deletions ...rex-dynamic-common/src/test/java/io/arex/inst/dynamic/common/ExpressionParseUtilTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,42 @@ static Stream<Arguments> generateKeyArgs() throws NoSuchMethodException {
Foo1.class),
"T(io.arex.inst.dynamic.common.ExpressionParseUtilTest).getMapKey(#f1.f1, #f1.f2)",
(Predicate<String>) "getMapKey-p1-1"::equals
),
Arguments.of(
new Object[]{
new Foo2("p1", 1),
new Foo2("p2", 2),
new Foo1(new Foo2("p3", 3))
},
ExpressionParseUtilTest.class.getDeclaredMethod("testParseMethodKey3", Foo2.class,
Foo2.class,
Foo1.class),
"#root.methodName + #f1.getF2() + #f2.getF2().toString() + #f3.getFoo2().f1",
(Predicate<String>) "testParseMethodKey312p3"::equals
),
Arguments.of(
new Object[]{
new Foo2("p1", 1),
new Foo2("p2", 2),
new Foo1(new Foo2("p3", 3))
},
ExpressionParseUtilTest.class.getDeclaredMethod("testParseMethodKey3", Foo2.class,
Foo2.class,
Foo1.class),
"#root.method.name + #f1.getF2() + #f2.getF2().toString() + #f3.getFoo2().f1",
(Predicate<String>) "testParseMethodKey312p3"::equals
),
Arguments.of(
new Object[]{
new Foo2("p1", 1),
new Foo2("p2", 2),
new Foo1(new Foo2("p3", 3))
},
ExpressionParseUtilTest.class.getDeclaredMethod("testParseMethodKey3", Foo2.class,
Foo2.class,
Foo1.class),
"#root.args[0].getF2().toString + #f1.getF2() + #f2.getF2().toString() + #f3.getFoo2().f1",
(Predicate<String>) "112p3"::equals
)
);
}
Expand Down