Examples with JsonToken com.fasterxml.jackson.core.JsonToken used on opensource projects

Example 41 with JsonToken

use of com.fasterxml.jackson.core.JsonToken in project moco by dreamhead.

the class TextContainerDeserializerHelper method textContainer.

public TextContainer textContainer(final JsonParser jp, final DeserializationContext ctxt) throws IOException {
    JsonToken currentToken = jp.getCurrentToken();
    if (currentToken == JsonToken.FIELD_NAME) {
        TextContainer.Builder builder = builder();
        String operation = jp.getText().trim();
        builder.withOperation(operation);
        JsonToken token = jp.nextToken();
        if (isForTemplate(operation) && token == JsonToken.START_OBJECT) {
            return template(jp, builder);
        }
        if (token == JsonToken.VALUE_STRING) {
            String text = jp.getText().trim();
            jp.nextToken();
            return builder.withText(text).build();
        }
    }
    return (TextContainer) ctxt.handleUnexpectedToken(TextContainer.class, jp);
}

Example 42 with JsonToken

use of com.fasterxml.jackson.core.JsonToken in project killbill by killbill.

the class PluginPropertySerializer method deserialize.

public static Iterable<PluginProperty> deserialize(final byte[] input) throws PluginPropertySerializerException {
    final List<PluginProperty> result = new ArrayList<PluginProperty>();
    try {
        final byte[] uncompressed = LZFDecoder.decode(input);
        final InputStream in = new ByteArrayInputStream(uncompressed);
        final JsonParser jsonParser = jsonFactory.createParser(in);
        PluginProperty prop = null;
        String key = null;
        JsonToken nextToken = jsonParser.nextToken();
        while (nextToken != null && nextToken != JsonToken.END_ARRAY) {
            if (nextToken != JsonToken.START_ARRAY) {
                if (nextToken == JsonToken.FIELD_NAME && key == null) {
                    key = jsonParser.getText();
                } else if (key != null) {
                    final Object value = mapper.readValue(jsonParser, Object.class);
                    prop = new PluginProperty(key, value, false);
                    key = null;
                } else if (nextToken == JsonToken.END_OBJECT) {
                    result.add(prop);
                    prop = null;
                }
            }
            nextToken = jsonParser.nextToken();
        }
        jsonParser.close();
        return result;
    } catch (final UnsupportedEncodingException e) {
        throw new PluginPropertySerializerException(e);
    } catch (final JsonParseException e) {
        throw new PluginPropertySerializerException(e);
    } catch (final IOException e) {
        throw new PluginPropertySerializerException(e);
    }
}

Example 43 with JsonToken

use of com.fasterxml.jackson.core.JsonToken in project presto by prestodb.

the class JsonFunctions method jsonArrayContains.

@SqlNullable
@ScalarFunction
@SqlType(StandardTypes.BOOLEAN)
public static Boolean jsonArrayContains(@SqlType(StandardTypes.JSON) Slice json, @SqlType(StandardTypes.DOUBLE) double value) {
    if (!Doubles.isFinite(value)) {
        return false;
    }
    try (JsonParser parser = createJsonParser(JSON_FACTORY, json)) {
        if (parser.nextToken() != START_ARRAY) {
            return null;
        }
        while (true) {
            JsonToken token = parser.nextToken();
            if (token == null) {
                return null;
            }
            if (token == END_ARRAY) {
                return false;
            }
            parser.skipChildren();
            // noinspection FloatingPointEquality
            if ((token == VALUE_NUMBER_FLOAT) && (parser.getDoubleValue() == value) && (Doubles.isFinite(parser.getDoubleValue()))) {
                return true;
            }
        }
    } catch (IOException e) {
        return null;
    }
}

Example 44 with JsonToken

use of com.fasterxml.jackson.core.JsonToken in project presto by prestodb.

the class JsonFunctions method jsonArrayGet.

@SqlNullable
@ScalarFunction
@SqlType(StandardTypes.JSON)
public static Slice jsonArrayGet(@SqlType(StandardTypes.JSON) Slice json, @SqlType(StandardTypes.BIGINT) long index) {
    // this value cannot be converted to positive number
    if (index == Long.MIN_VALUE) {
        return null;
    }
    try (JsonParser parser = createJsonParser(MAPPING_JSON_FACTORY, json)) {
        if (parser.nextToken() != START_ARRAY) {
            return null;
        }
        List<String> tokens = null;
        if (index < 0) {
            tokens = new LinkedList<>();
        }
        long count = 0;
        while (true) {
            JsonToken token = parser.nextToken();
            if (token == null) {
                return null;
            }
            if (token == END_ARRAY) {
                if (tokens != null && count >= index * -1) {
                    return utf8Slice(tokens.get(0));
                }
                return null;
            }
            String arrayElement;
            if (token == START_OBJECT || token == START_ARRAY) {
                arrayElement = parser.readValueAsTree().toString();
            } else {
                arrayElement = parser.getValueAsString();
            }
            if (count == index) {
                return arrayElement == null ? null : utf8Slice(arrayElement);
            }
            if (tokens != null) {
                tokens.add(arrayElement);
                if (count >= index * -1) {
                    tokens.remove(0);
                }
            }
            count++;
        }
    } catch (IOException e) {
        return null;
    }
}

Example 45 with JsonToken

use of com.fasterxml.jackson.core.JsonToken in project presto by prestodb.

the class JsonOperators method castToVarchar.

@ScalarOperator(CAST)
@SqlNullable
@LiteralParameters("x")
@SqlType("varchar(x)")
public static Slice castToVarchar(@SqlType(JSON) Slice json) {
    try (JsonParser parser = createJsonParser(JSON_FACTORY, json)) {
        JsonToken nextToken = parser.nextToken();
        Slice result;
        switch(nextToken) {
            case VALUE_NULL:
                result = null;
                break;
            case VALUE_STRING:
                result = Slices.utf8Slice(parser.getText());
                break;
            case VALUE_NUMBER_FLOAT:
                // Avoidance of loss of precision does not seem to be possible here because of Jackson implementation.
                result = DoubleOperators.castToVarchar(parser.getDoubleValue());
                break;
            case VALUE_NUMBER_INT:
                // An alternative is calling getLongValue and then BigintOperators.castToVarchar.
                // It doesn't work as well because it can result in overflow and underflow exceptions for large integral numbers.
                result = Slices.utf8Slice(parser.getText());
                break;
            case VALUE_TRUE:
                result = BooleanOperators.castToVarchar(true);
                break;
            case VALUE_FALSE:
                result = BooleanOperators.castToVarchar(false);
                break;
            default:
                throw new PrestoException(INVALID_CAST_ARGUMENT, format("Cannot cast '%s' to %s", json.toStringUtf8(), VARCHAR));
        }
        // check no trailing token
        checkCondition(parser.nextToken() == null, INVALID_CAST_ARGUMENT, "Cannot cast input json to VARCHAR");
        return result;
    } catch (IOException e) {
        throw new PrestoException(INVALID_CAST_ARGUMENT, format("Cannot cast '%s' to %s", json.toStringUtf8(), VARCHAR));
    }
}