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

Introduction

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

Prototype

public abstract void copyCurrentEvent(JsonParser jp) throws IOException, JsonProcessingException;

Source Link

Document

Method for copying contents of the current event that the given parser instance points to.

Usage

From source file:com.teamlazerbeez.crm.sf.rest.HttpApiClientTest.java

private static String reformatJson(String input) throws IOException {
    JsonFactory jsonFactory = new JsonFactory();

    JsonParser parser = jsonFactory.createJsonParser(input);
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createJsonGenerator(writer);
    generator.useDefaultPrettyPrinter();

    while (parser.nextToken() != null) {
        generator.copyCurrentEvent(parser);
    }/*from  www .  j  ava2  s.  c o m*/

    generator.close();

    return writer.toString();
}

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From source file:com.palominolabs.crm.sf.rest.HttpApiClientTest.java

private static String reformatJson(@Nullable String input) throws IOException {
    checkNotNull(input);//from  w ww  .  ja  va 2 s. com

    JsonFactory jsonFactory = new JsonFactory();

    JsonParser parser = jsonFactory.createParser(input);
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createGenerator(writer);
    generator.useDefaultPrettyPrinter();

    while (parser.nextToken() != null) {
        generator.copyCurrentEvent(parser);
    }

    generator.close();

    return writer.toString();
}

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From source file:org.zalando.logbook.JsonHttpLogFormatter.java

private String compactJson(final String json) throws IOException {
    if (isAlreadyCompacted(json)) {
        return json;
    }//  w  ww.  ja  v  a2s .c o m

    final StringWriter output = new StringWriter();
    final JsonFactory factory = mapper.getFactory();
    final JsonParser parser = factory.createParser(json);

    final JsonGenerator generator = factory.createGenerator(output);

    // https://github.com/jacoco/jacoco/wiki/FilteringOptions
    //noinspection TryFinallyCanBeTryWithResources - jacoco can't handle try-with correctly
    try {
        while (parser.nextToken() != null) {
            generator.copyCurrentEvent(parser);
        }
    } finally {
        generator.close();
    }

    return output.toString();
}

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From source file:com.bazaarvoice.jsonpps.PrettyPrintJson.java

private void copyCurrentStructure(JsonParser parser, ObjectMapper mapper, int depth, JsonGenerator generator)
        throws IOException {
    // Avoid using the mapper to parse the entire input until we absolutely must.  This allows pretty
    // printing huge top-level arrays (that wouldn't fit in memory) containing smaller objects (that
    // individually do fit in memory) where the objects are printed with sorted keys.
    JsonToken t = parser.getCurrentToken();
    if (t == null) {
        generator.copyCurrentStructure(parser); // Will report the error of a null token.
        return;/*from  w w  w .  ja  v a2s  .  c om*/
    }
    int id = t.id();
    if (id == ID_FIELD_NAME) {
        if (depth > flatten) {
            generator.writeFieldName(parser.getCurrentName());
        }
        t = parser.nextToken();
        id = t.id();
    }
    switch (id) {
    case ID_START_OBJECT:
        if (sortKeys && depth >= flatten) {
            // Load the entire object in memory so we can sort its keys and serialize it back out.
            mapper.writeValue(generator, parser.readValueAs(Map.class));
        } else {
            // Don't load the whole object into memory.  Copy it in a memory-efficient streaming fashion.
            if (depth >= flatten) {
                generator.writeStartObject();
            }
            while (parser.nextToken() != JsonToken.END_OBJECT) {
                copyCurrentStructure(parser, mapper, depth + 1, generator);
            }
            if (depth >= flatten) {
                generator.writeEndObject();
            }
        }
        break;
    case ID_START_ARRAY:
        // Don't load the whole array into memory.  Copy it in a memory-efficient streaming fashion.
        if (depth >= flatten) {
            generator.writeStartArray();
        }
        while (parser.nextToken() != JsonToken.END_ARRAY) {
            copyCurrentStructure(parser, mapper, depth + 1, generator);
        }
        if (depth >= flatten) {
            generator.writeEndArray();
        }
        break;
    default:
        generator.copyCurrentEvent(parser);
        break;
    }
}

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