Example usage for com.fasterxml.jackson.core JsonParser clearCurrentToken

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonParser clearCurrentToken.

Prototype

public abstract void clearCurrentToken();

Source Link

Document

Method called to "consume" the current token by effectively removing it so that #hasCurrentToken returns false, and #getCurrentToken null).

Usage

From source file:org.dbrain.data.jackson.serializers.JacksonSerializationUtils.java

public static Value parseValue(JsonParser parser, DeserializationContext ctxt) throws IOException {
    JsonToken token = getToken(parser);//  ww  w  .j  av  a 2 s .  c o  m
    if (token != null) {
        Value result;
        switch (token) {
        case VALUE_STRING:
            result = Value.of(parser.getValueAsString());
            break;
        case VALUE_NUMBER_FLOAT:
            result = Value.of(parser.getDoubleValue());
            break;
        case VALUE_NUMBER_INT:
            result = Value.of(parser.getBigIntegerValue());
            break;
        case VALUE_NULL:
            result = NullValueImpl.NULL;
            break;
        case VALUE_TRUE:
            result = Value.of(Boolean.TRUE);
            break;
        case VALUE_FALSE:
            result = Value.of(Boolean.FALSE);
            break;
        case START_OBJECT: {
            ValueMap values = ValueMap.newInstance();
            while (parser.nextToken() == JsonToken.FIELD_NAME) {
                String key = parser.getCurrentName();
                parser.nextToken();
                Value v = parseValue(parser, ctxt);
                if (v == null) {
                    throw ctxt.wrongTokenException(parser, JsonToken.START_OBJECT, "Expected Value");
                }
                values.put(key, v);
            }
            if (getToken(parser) == JsonToken.END_OBJECT) {
                parser.clearCurrentToken();
            } else {
                throw ctxt.wrongTokenException(parser, JsonToken.END_OBJECT, null);
            }
            result = values;
        }
            break;
        case START_ARRAY: {
            ValueList values = ValueList.newInstance();
            while (parser.nextToken() != JsonToken.END_ARRAY) {
                Value v = parseValue(parser, ctxt);
                if (v == null) {
                    throw ctxt.wrongTokenException(parser, JsonToken.START_OBJECT, "Expected Value");
                }
                values.add(v);
            }
            if (getToken(parser) == JsonToken.END_ARRAY) {
                parser.clearCurrentToken();
            } else {
                throw ctxt.wrongTokenException(parser, JsonToken.END_ARRAY, null);
            }
            result = values;
        }
            break;
        default:
            throw ctxt.wrongTokenException(parser, JsonToken.START_OBJECT, "Expected Value");
        }
        return result;
    } else {
        return null;
    }
}

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From source file:com.opentable.jaxrs.StreamedJsonResponseConverter.java

private <T> void doRead(Callback<T> callback, TypeReference<T> type, final JsonParser jp) throws IOException {
    expect(jp, jp.nextToken(), JsonToken.START_OBJECT);
    expect(jp, jp.nextToken(), JsonToken.FIELD_NAME);
    if (!"results".equals(jp.getCurrentName())) {
        throw new JsonParseException("expecting results field", jp.getCurrentLocation());
    }//ww  w.  ja v a2s.  c o  m
    expect(jp, jp.nextToken(), JsonToken.START_ARRAY);
    // As noted in a well-hidden comment in the MappingIterator constructor,
    // readValuesAs requires the parser to be positioned after the START_ARRAY
    // token with an empty current token
    jp.clearCurrentToken();

    Iterator<T> iter = jp.readValuesAs(type);

    while (iter.hasNext()) {
        try {
            callback.call(iter.next());
        } catch (CallbackRefusedException e) {
            LOG.debug("callback refused execution, finishing.", e);
            return;
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new IOException("Callback interrupted", e);
        } catch (Exception e) {
            Throwables.propagateIfPossible(e, IOException.class);
            throw new IOException("Callback failure", e);
        }
    }
    if (jp.nextValue() != JsonToken.VALUE_TRUE || !jp.getCurrentName().equals("success")) {
        throw new IOException("Streamed receive did not terminate normally; inspect server logs for cause.");
    }
}

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From source file:nl.talsmasoftware.enumerables.support.json.jackson2.EnumerableDeserializer.java

private Enumerable parseObject(JsonParser jp, Class<? extends Enumerable> type) throws IOException {
    Enumerable value = null;//from   w w  w.j  a  v  a2  s .  com
    while (true) {
        final JsonToken nextToken = jp.nextToken();
        if (nextToken == null)
            throw new IllegalStateException("JSON stream ended while parsing an Enumerable object.");

        switch (nextToken) {
        case VALUE_NULL:
        case VALUE_STRING:
            if (value == null && "value".equals(jp.getCurrentName())) {
                value = Enumerable.parse(type, jp.getText());
            }
            break;
        case END_OBJECT:
            jp.clearCurrentToken();
            if (value == null)
                throw new IllegalStateException(
                        "Attribute \"value\" is required to parse an Enumerable JSON object.");
            return value;
        case START_ARRAY:
        case START_OBJECT:
            jp.skipChildren();
            jp.clearCurrentToken();
            break;
        }
    }
}

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