A small library for materializing value classes and builders from value types defined as minimal interfaces. Inspired by auto-value.
package io.norberg.automatter.example;
import io.norberg.automatter.AutoMatter;
@AutoMatter
public interface Example {
String foo();
int bar();
}Example example = new ExampleBuilder()
.bar(17)
.foo("hello world")
.build();
System.out.println(example);<dependency>
<groupId>io.norberg</groupId>
<artifactId>auto-matter</artifactId>
<version>0.2</version>
<scope>provided</scope>
</dependency><dependency>
<groupId>io.norberg</groupId>
<artifactId>auto-matter-jackson</artifactId>
<version>0.2</version>
</dependency>ObjectMapper mapper = new ObjectMapper()
.registerModule(new AutoMatterModule());
Foobar foobar = new FoobarBuilder()
.bar(17)
.foo("hello world")
.build();
String json = mapper.writeValueAsString(foobar);
Foobar parsed = mapper.readValue(json, Foobar.class);<dependency>
<groupId>io.norberg</groupId>
<artifactId>auto-matter-gson</artifactId>
<version>0.3-SNAPSHOT</version>
</dependency>Gson gson = new GsonBuilder()
.registerTypeAdapterFactory(new AutoMatterTypeAdapterFactory())
.create();
Foobar foobar = new FoobarBuilder()
.bar(17)
.foo("hello world")
.build();
String json = gson.toJson(foobar);
Foobar parsed = gson.fromJson(json, Foobar.class);-
Null-checking, opt-outable using @Nullable
-
Recursive builders, like protobuf.
-
More tests
-
Support nested interfaces
-
Collection support. E.g. something like below:
@AutoMatter
interface Foobar {
List<String> foos();
Map<String, String> bars();
}
// ...
Foobar foobar = new FoobarBuilder()
.foo("1")
.foo("2")
.bar("k1", "v2")
.bar("k2", "v2")
.build();
assert foobar.foos().equals(asList("1", "2"));
assert foobar.bars().equals(ImmutableMap.of("k1", "v1",
"k2", "v2"));