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FilteredRenderJSON.java
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package act.view;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import act.app.ActionContext;
import act.util.ActContext;
import act.util.JsonUtilConfig;
import act.util.PropertySpec;
import org.osgl.$;
import org.osgl.http.H;
import org.osgl.http.Http;
import org.osgl.mvc.result.RenderContent;
import org.osgl.mvc.result.RenderJSON;
import org.osgl.util.Output;
import java.io.Writer;
/**
* An enhanced version of {@link org.osgl.mvc.result.RenderJSON} that
* allows {@link act.util.PropertySpec} to be applied to control the
* output fields
*/
public class FilteredRenderJSON extends RenderJSON {
public static final FilteredRenderJSON _INSTANCE = new FilteredRenderJSON() {
@Override
public String content() {
return payload().message;
}
@Override
public $.Visitor<Writer> contentWriter() {
return payload().contentWriter;
}
@Override
public Http.Status status() {
Http.Status status = payload().status;
return null == status ? super.status() : status;
}
@Override
public long timestamp() {
return payload().timestamp;
}
@Override
public boolean isOutputEncoding() {
return payload().outputEncoding();
}
@Override
public RenderContent setOutputEncoding(boolean outputEncoding) {
payload().outputEncoding(outputEncoding);
return this;
}
@Override
public H.Format format() {
return H.Format.JSON;
}
};
private FilteredRenderJSON() {
super(H.Format.JSON);
}
public FilteredRenderJSON(final Object v, final PropertySpec.MetaInfo spec, final ActContext context) {
super(new JsonUtilConfig.JsonWriter(v, spec, false, context));
}
public FilteredRenderJSON(H.Status status, final Object v, final PropertySpec.MetaInfo spec, final ActContext context) {
super(status, new JsonUtilConfig.JsonWriter(v, spec, false, context));
}
public static FilteredRenderJSON of(final Object v, final PropertySpec.MetaInfo spec, final ActionContext context) {
if (v instanceof String) {
touchPayload().message((String) v);
} else if (v instanceof $.Visitor) {
touchPayload().contentWriter(($.Visitor) v);
} else {
if (context.isLargeResponse() || v instanceof Iterable) {
touchPayload().contentWriter(new JsonUtilConfig.JsonWriter(v, spec, false, context));
} else {
touchPayload().stringContentProducer(new JsonUtilConfig.JsonWriter(v, spec, false, context).asContentProducer());
}
touchPayload().contentWriter(new JsonUtilConfig.JsonWriter(v, spec, false, context));
}
return _INSTANCE;
}
public static FilteredRenderJSON of(H.Status status, final Object v, final PropertySpec.MetaInfo spec, final ActionContext context) {
touchPayload().status(status);
return of(v, spec, context);
}
}