Example usage for com.google.gson.stream JsonWriter getSerializeNulls

Introduction

In this page you can find the example usage for com.google.gson.stream JsonWriter getSerializeNulls.

Prototype

public final boolean getSerializeNulls() 

Source Link

Document

Returns true if object members are serialized when their value is null.

Usage

From source file:com.vaadin.addon.charts.model.gsonhelpers.TitleTypeAdapterFactory.java

private TypeAdapter<Title> customizeMyClassAdapter(Gson gson, TypeToken<Title> type) {
    final TypeAdapter<Title> delegate = gson.getDelegateAdapter(this, type);
    final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class);
    return new TypeAdapter<Title>() {
        @Override/*from   w w w . j av a  2s . c om*/
        public void write(JsonWriter out, Title value) throws IOException {
            // null for text is significant, else there will be
            // "Chart Title" as default
            if (value != null && value.getText() == null) {
                boolean serializeNulls = out.getSerializeNulls();
                out.setSerializeNulls(true);
                out.beginObject();
                out.name("text");
                out.nullValue();
                out.endObject();
                out.setSerializeNulls(serializeNulls);
            } else {
                elementAdapter.write(out, delegate.toJsonTree(value));
            }
        }

        // This is never used
        @Override
        public Title read(JsonReader in) throws IOException {
            JsonElement tree = elementAdapter.read(in);
            return delegate.fromJsonTree(tree);
        }
    };
}

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From source file:org.eclipse.lsp4j.adapters.InitializeParamsTypeAdapter.java

License:Open Source License

protected void writeProcessId(final JsonWriter out, final Integer value) throws IOException {
    if ((value == null)) {
        final boolean previousSerializeNulls = out.getSerializeNulls();
        out.setSerializeNulls(true);//  www.  j a v  a 2 s. c om
        out.nullValue();
        out.setSerializeNulls(previousSerializeNulls);
    } else {
        out.value(value);
    }
}

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From source file:org.eclipse.lsp4j.adapters.InitializeParamsTypeAdapter.java

License:Open Source License

protected void writeRootUri(final JsonWriter out, final String value) throws IOException {
    if ((value == null)) {
        final boolean previousSerializeNulls = out.getSerializeNulls();
        out.setSerializeNulls(true);// ww w .  j av a  2  s . c o m
        out.nullValue();
        out.setSerializeNulls(previousSerializeNulls);
    } else {
        out.value(value);
    }
}

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From source file:org.eclipse.lsp4j.adapters.VersionedTextDocumentIdentifierTypeAdapter.java

License:Open Source License

protected void writeVersion(final JsonWriter out, final Integer value) throws IOException {
    if ((value == null)) {
        final boolean previousSerializeNulls = out.getSerializeNulls();
        out.setSerializeNulls(true);//  www. j a v  a 2  s  .  co  m
        out.nullValue();
        out.setSerializeNulls(previousSerializeNulls);
    } else {
        out.value(value);
    }
}

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From source file:org.eclipse.lsp4j.jsonrpc.json.adapters.MessageTypeAdapter.java

License:Open Source License

/**
 * Use this method to write a {@code null} value even if the JSON writer is set to not serialize {@code null}.
 *///from  w w w .  jav a 2  s . c  om
protected void writeNullValue(JsonWriter out) throws IOException {
    boolean previousSerializeNulls = out.getSerializeNulls();
    out.setSerializeNulls(true);
    out.nullValue();
    out.setSerializeNulls(previousSerializeNulls);
}

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From source file:org.hibernate.search.elasticsearch.util.impl.gson.ES2FieldDataTypeJsonAdapter.java

License:LGPL

@Override
public void write(JsonWriter out, FieldDataType value) throws IOException {
    // Ignore the value: fielddata is not supported on ES2
    boolean previousSerializeNulls = out.getSerializeNulls();
    out.setSerializeNulls(false);/*from  w w w  .  ja va 2  s.com*/
    out.nullValue();
    out.setSerializeNulls(previousSerializeNulls);
}

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From source file:org.hibernate.search.elasticsearch.util.impl.gson.ES2NormsTypeJsonAdapter.java

License:LGPL

@Override
public void write(JsonWriter out, NormsType value) throws IOException {
    // Ignore the value: we don't support norms on ES2
    boolean previousSerializeNulls = out.getSerializeNulls();
    out.setSerializeNulls(false);//from   ww w  . j  a v  a2 s  .  c o  m
    out.nullValue();
    out.setSerializeNulls(previousSerializeNulls);
}

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From source file:org.jclouds.json.internal.NullHackJsonLiteralAdapter.java

License:Apache License

@Override
public void write(JsonWriter jsonWriter, L value) throws IOException {

    Writer writer = getWriter(jsonWriter);
    boolean serializeNulls = jsonWriter.getSerializeNulls();
    try {/*from ww  w  .j  a  v a 2 s  .c om*/
        // we are using an implementation hack which depends on replacing null with the raw json
        // supplied as a parameter. In this case, we must ensure we indeed serialize nulls.
        NullReplacingWriter nullReplacingWriter = new NullReplacingWriter(writer, toString(value));
        setWriter(jsonWriter, nullReplacingWriter);
        jsonWriter.setSerializeNulls(true);
        jsonWriter.nullValue();
    } finally {
        setWriter(jsonWriter, writer);
        jsonWriter.setSerializeNulls(serializeNulls);
    }

}

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