Example usage for com.fasterxml.jackson.core JsonGenerator writeFieldName

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonGenerator writeFieldName.

Prototype

public abstract void writeFieldName(SerializableString name) throws IOException, JsonGenerationException;

Source Link

Document

Method similar to #writeFieldName(String) , main difference being that it may perform better as some of processing (such as quoting of certain characters, or encoding into external encoding if supported by generator) can be done just once and reused for later calls.

Usage

From source file:org.apache.orc.bench.convert.json.JsonWriter.java

static void printStruct(JsonGenerator writer, StructColumnVector batch, TypeDescription schema, int row)
        throws IOException {
    writer.writeStartObject();//w  ww  .jav a2s .c o m
    List<String> fieldNames = schema.getFieldNames();
    List<TypeDescription> fieldTypes = schema.getChildren();
    for (int i = 0; i < fieldTypes.size(); ++i) {
        writer.writeFieldName(fieldNames.get(i));
        printValue(writer, batch.fields[i], fieldTypes.get(i), row);
    }
    writer.writeEndObject();
}

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From source file:org.apache.orc.bench.convert.json.JsonWriter.java

static void printRow(JsonGenerator writer, VectorizedRowBatch batch, TypeDescription schema, int row)
        throws IOException {
    if (schema.getCategory() == TypeDescription.Category.STRUCT) {
        List<TypeDescription> fieldTypes = schema.getChildren();
        List<String> fieldNames = schema.getFieldNames();
        writer.writeStartObject();/*w w w . ja v  a  2s .  c  om*/
        for (int c = 0; c < batch.cols.length; ++c) {
            writer.writeFieldName(fieldNames.get(c));
            printValue(writer, batch.cols[c], fieldTypes.get(c), row);
        }
        writer.writeEndObject();
    } else {
        printValue(writer, batch.cols[0], schema, row);
    }
}

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From source file:org.apache.orc.bench.convert.json.JsonWriter.java

private static void printMap(JsonGenerator writer, MapColumnVector vector, TypeDescription schema, int row)
        throws IOException {
    writer.writeStartArray();/*from   w  w  w .ja v a2 s  . c  o  m*/
    TypeDescription keyType = schema.getChildren().get(0);
    TypeDescription valueType = schema.getChildren().get(1);
    int offset = (int) vector.offsets[row];
    for (int i = 0; i < vector.lengths[row]; ++i) {
        writer.writeStartObject();
        writer.writeFieldName("_key");
        printValue(writer, vector.keys, keyType, offset + i);
        writer.writeFieldName("_value");
        printValue(writer, vector.values, valueType, offset + i);
        writer.writeEndObject();
    }
    writer.writeEndArray();
}

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From source file:com.basho.riak.client.raw.http.ConversionUtil.java

private static void writeIfNotNull(JsonGenerator jg, NamedErlangFunction value, String fieldName)
        throws IOException {
    if (value != null) {
        jg.writeFieldName(fieldName);
        writeNamedFun(jg, value);/* ww w  .  j a  va 2 s . c o  m*/
    }
}

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From source file:com.tage.calcite.adapter.druid.DruidQuery.java

static void writeField(JsonGenerator generator, String fieldName, Object o) throws IOException {
    generator.writeFieldName(fieldName);
    writeObject(generator, o);//  w  w w .j a  va 2  s  .  c  o m
}

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From source file:eu.project.ttc.models.index.JsonTermIndexIO.java

public static void save(Writer writer, TermIndex termIndex, JsonOptions options) throws IOException {
    JsonFactory jsonFactory = new JsonFactory(); // or, for data binding, org.codehaus.jackson.mapper.MappingJsonFactory 
    //      jsonFactory.configure(f, state)
    JsonGenerator jg = jsonFactory.createGenerator(writer); // or Stream, Reader
    jg.useDefaultPrettyPrinter();/*from   w w w. j a  v a  2  s.  com*/

    jg.writeStartObject();

    jg.writeFieldName(METADATA);
    jg.writeStartObject();
    jg.writeFieldName(NAME);
    jg.writeString(termIndex.getName());
    jg.writeFieldName(LANG);
    jg.writeString(termIndex.getLang().getCode());
    if (termIndex.getCorpusId() != null) {
        jg.writeFieldName(CORPUS_ID);
        jg.writeString(termIndex.getCorpusId());
    }

    jg.writeFieldName(OCCURRENCE_STORAGE);
    if (options.isMongoDBOccStore()) {
        jg.writeString(OCCURRENCE_STORAGE_MONGODB);
        jg.writeFieldName(OCCURRENCE_MONGODB_STORE_URI);
        jg.writeString(options.getMongoDBOccStore());
    } else if (options.isEmbeddedOccurrences())
        jg.writeString(OCCURRENCE_STORAGE_EMBEDDED);
    else
        throw new IllegalStateException("Unknown storage mode");

    jg.writeFieldName(NB_WORD_ANNOTATIONS);
    jg.writeNumber(termIndex.getWordAnnotationsNum());
    jg.writeFieldName(NB_SPOTTED_TERMS);
    jg.writeNumber(termIndex.getSpottedTermsNum());

    jg.writeEndObject();

    jg.writeFieldName(INPUT_SOURCES);
    int idCnt = 0;
    Map<String, Integer> inputSources = Maps.newTreeMap();
    for (Document d : termIndex.getDocuments())
        if (!inputSources.containsKey(d.getUrl()))
            inputSources.put(d.getUrl(), ++idCnt);
    jg.writeStartObject();
    for (String uri : inputSources.keySet()) {
        jg.writeFieldName(inputSources.get(uri).toString());
        jg.writeString(uri);
    }
    jg.writeEndObject();

    jg.writeFieldName(WORDS);
    jg.writeStartArray();
    for (Word w : termIndex.getWords()) {
        jg.writeStartObject();
        jg.writeFieldName(LEMMA);
        jg.writeString(w.getLemma());
        jg.writeFieldName(STEM);
        jg.writeString(w.getStem());
        if (w.isCompound()) {
            jg.writeFieldName(COMPOUND_TYPE);
            jg.writeString(w.getCompoundType().name());
            jg.writeFieldName(COMPONENTS);
            jg.writeStartArray();
            for (Component c : w.getComponents()) {
                jg.writeStartObject();
                jg.writeFieldName(LEMMA);
                jg.writeString(c.getLemma());
                jg.writeFieldName(BEGIN);
                jg.writeNumber(c.getBegin());
                jg.writeFieldName(END);
                jg.writeNumber(c.getEnd());
                jg.writeEndObject();
            }
            jg.writeEndArray();
        }

        jg.writeEndObject();
    }
    jg.writeEndArray();

    Set<TermVariation> termVariations = Sets.newHashSet();

    jg.writeFieldName(TERMS);
    jg.writeStartArray();
    for (Term t : termIndex.getTerms()) {
        termVariations.addAll(t.getVariations());

        jg.writeStartObject();
        jg.writeFieldName(ID);
        jg.writeNumber(t.getId());
        jg.writeFieldName(RANK);
        jg.writeNumber(t.getRank());
        jg.writeFieldName(GROUPING_KEY);
        jg.writeString(t.getGroupingKey());
        jg.writeFieldName(WORDS);
        jg.writeStartArray();
        for (TermWord tw : t.getWords()) {
            jg.writeStartObject();
            jg.writeFieldName(SYN);
            jg.writeString(tw.getSyntacticLabel());
            jg.writeFieldName(LEMMA);
            jg.writeString(tw.getWord().getLemma());
            jg.writeEndObject();
        }
        jg.writeEndArray();

        jg.writeFieldName(FREQUENCY);
        jg.writeNumber(t.getFrequency());
        jg.writeFieldName(FREQ_NORM);
        jg.writeNumber(t.getFrequencyNorm());
        jg.writeFieldName(GENERAL_FREQ_NORM);
        jg.writeNumber(t.getGeneralFrequencyNorm());
        jg.writeFieldName(SPECIFICITY);
        jg.writeNumber(t.getSpecificity());
        jg.writeFieldName(SPOTTING_RULE);
        jg.writeString(t.getSpottingRule());

        if (options.withOccurrences() && options.isEmbeddedOccurrences()) {
            jg.writeFieldName(OCCURRENCES);
            jg.writeStartArray();
            for (TermOccurrence termOcc : t.getOccurrences()) {
                jg.writeStartObject();
                jg.writeFieldName(BEGIN);
                jg.writeNumber(termOcc.getBegin());
                jg.writeFieldName(END);
                jg.writeNumber(termOcc.getEnd());
                jg.writeFieldName(TEXT);
                jg.writeString(termOcc.getCoveredText());
                jg.writeFieldName(FILE);
                jg.writeNumber(inputSources.get(termOcc.getSourceDocument().getUrl()));
                jg.writeEndObject();
            }
            jg.writeEndArray();
        }

        if (options.isWithContexts() && t.isContextVectorComputed()) {
            jg.writeFieldName(CONTEXT);
            jg.writeStartObject();

            jg.writeFieldName(TOTAL_COOCCURRENCES);
            jg.writeNumber(t.getContextVector().getTotalCoccurrences());
            jg.writeFieldName(CO_OCCURRENCES);
            jg.writeStartArray();
            if (t.isContextVectorComputed()) {
                for (ContextVector.Entry contextEntry : t.getContextVector().getEntries()) {
                    jg.writeStartObject();
                    jg.writeFieldName(CO_TERM);
                    jg.writeString(contextEntry.getCoTerm().getGroupingKey());
                    jg.writeFieldName(NB_COCCS);
                    jg.writeNumber(contextEntry.getNbCooccs());
                    jg.writeFieldName(ASSOC_RATE);
                    jg.writeNumber(contextEntry.getAssocRate());
                    jg.writeEndObject();
                }
            }
            jg.writeEndArray();
            jg.writeEndObject();
        }

        jg.writeEndObject();
    }
    jg.writeEndArray();

    /* Variants */
    jg.writeFieldName(TERM_VARIATIONS);
    jg.writeStartArray();
    for (TermVariation v : termVariations) {
        jg.writeStartObject();
        jg.writeFieldName(BASE);
        jg.writeString(v.getBase().getGroupingKey());
        jg.writeFieldName(VARIANT);
        jg.writeString(v.getVariant().getGroupingKey());
        jg.writeFieldName(VARIANT_TYPE);
        jg.writeString(v.getVariationType().getShortName());
        jg.writeFieldName(INFO);
        jg.writeString(v.getInfo().toString());
        jg.writeFieldName(VARIANT_SCORE);
        jg.writeNumber(v.getScore());
        jg.writeEndObject();
    }
    jg.writeEndArray();

    jg.writeEndObject();
    jg.close();
}

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From source file:com.baasbox.configuration.PropertiesConfigurationHelper.java

/***
 *
 * Returns a json representation of the Enumerator
 * The Enumerator must implements the IProperties interface
 * @param en    the Enumerator to serialize. It must implements the IProperties interface
 * @return       the representation of the Enumerator 
 *///  w w  w .j  a va  2s.  c  o  m
@SuppressWarnings("unchecked")
public static String dumpConfigurationAsJson(String section) {
    Class en = CONFIGURATION_SECTIONS.get(section);
    try {
        JsonFactory jfactory = new JsonFactory();
        StringWriter sw = new StringWriter();
        String enumDescription = "";
        JsonGenerator gen = jfactory.createJsonGenerator(sw);

        Method getEnumDescription = en.getMethod("getEnumDescription");
        if (getEnumDescription != null && getEnumDescription.getReturnType() == String.class
                && Modifier.isStatic(getEnumDescription.getModifiers()))
            enumDescription = (String) getEnumDescription.invoke(null);
        gen.writeStartObject(); //{
        gen.writeStringField("section", section); //    "configuration":"EnumName"
        gen.writeStringField("description", enumDescription); //   ,"description": "EnumDescription"
        gen.writeFieldName("sub sections"); //  ,"sections":
        gen.writeStartObject(); //      {
        String lastSection = "";
        EnumSet values = EnumSet.allOf(en);
        for (Object v : values) {
            String key = (String) (en.getMethod("getKey")).invoke(v);
            boolean isVisible = (Boolean) (en.getMethod("isVisible")).invoke(v);
            String valueAsString;
            if (isVisible)
                valueAsString = (String) (en.getMethod("getValueAsString")).invoke(v);
            else
                valueAsString = "--HIDDEN--";
            boolean isEditable = (Boolean) (en.getMethod("isEditable")).invoke(v);
            String valueDescription = (String) (en.getMethod("getValueDescription")).invoke(v);
            Class type = (Class) en.getMethod("getType").invoke(v);
            String subsection = key.substring(0, key.indexOf('.'));
            if (!lastSection.equals(subsection)) {
                if (gen.getOutputContext().inArray())
                    gen.writeEndArray();
                gen.writeFieldName(subsection); //         "sectionName":
                gen.writeStartArray(); //            [
                lastSection = subsection;
            }
            boolean isOverridden = (Boolean) (en.getMethod("isOverridden")).invoke(v);
            gen.writeStartObject(); //               {
            gen.writeStringField(key, valueAsString); //                     "key": "value"   
            gen.writeStringField("description", valueDescription); //                  ,"description":"description"
            gen.writeStringField("type", type.getSimpleName()); //                  ,"type":"type"
            gen.writeBooleanField("editable", isEditable); //                  ,"editable":"true|false"
            gen.writeBooleanField("visible", isVisible); //                  ,"visible":"true|false"
            gen.writeBooleanField("overridden", isOverridden); //                  ,"overridden":"true|false"
            gen.writeEndObject(); //               }
        }
        if (gen.getOutputContext().inArray())
            gen.writeEndArray(); //            ]
        gen.writeEndObject(); //      }
        gen.writeEndObject(); //}
        gen.close();
        return sw.toString();
    } catch (Exception e) {
        BaasBoxLogger.error("Cannot generate a json for " + en.getSimpleName()
                + " Enum. Is it an Enum that implements the IProperties interface?", e);
    }
    return "{}";
}

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From source file:YDExtStandardAssetWriter.java

@Override
protected void write(OpenRtb.NativeRequest.Asset ext, JsonGenerator gen) throws IOException {
    gen.writeFieldName(Constants.EXTEND_STANDARD_ASSET_FIELD_NAME);
    openRtbNativeJsonWriter.writeReqAsset(ext, gen);
}

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From source file:de.tudarmstadt.ukp.dkpro.core.io.brat.internal.model.BratLabelDecl.java

public void write(JsonGenerator aJG) throws IOException {
    aJG.writeFieldName("labels");
    aJG.writeStartArray();// w w  w . j ava  2s. c  o  m
    for (String label : labels) {
        aJG.writeString(label);
    }
    aJG.writeEndArray();
}

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From source file:de.tudarmstadt.ukp.dkpro.core.io.brat.internal.model.BratAttributeDrawingDecl.java

@Override
public void write(JsonGenerator aJG) throws IOException {
    aJG.writeFieldName("values");
    aJG.writeStartObject();//from   w w w.j a  v a 2 s .  co m
    for (String value : attributeDecl.getValues()) {
        aJG.writeFieldName(value);
        aJG.writeStartObject();
        aJG.writeStringField("glyph", value);
        aJG.writeEndObject();
    }
    aJG.writeEndObject();
}

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