Java Code Examples for com.fasterxml.jackson.core.JsonParser#getValueAsBoolean()

/**
 * Get Node type from the parser
 *
 * @param jsonParser
 * @return Node - return Node type based on json token
 */
private Node getValue( JsonParser jsonParser, String key ) {
  try {
    switch ( jsonParser.currentToken() ) {
      case START_OBJECT:
        return new ObjectNode( key );
      case START_ARRAY:
        return new ArrayNode( key );
      case VALUE_STRING:
        return new ValueNode<>( key, jsonParser.getValueAsString() );
      case VALUE_TRUE:
      case VALUE_FALSE:
        return new ValueNode<>( key, jsonParser.getValueAsBoolean() );
      case VALUE_NULL:
        return new ValueNode<>( key, null );
      case VALUE_NUMBER_FLOAT:
        return new ValueNode<>( key, jsonParser.getValueAsDouble() );
      case VALUE_NUMBER_INT:
        return new ValueNode<>( key, jsonParser.getValueAsInt() );
    }
  } catch ( IOException ioe ) {
    return null;
  }
  return null;
}
 

/**
 * Helper used to extract named boolean fields from the json parser in a streaming fashion.
 *
 * @param jparser The parser to use for extraction.
 * @param expectedFieldName The expected name of the next field in the stream.
 * @return The boolean representation of the requested field.
 * @throws IOException If there is an error parsing the field.
 */
protected boolean getNextBoolField(final JsonParser jparser, final String expectedFieldName)
        throws IOException
{
    assertFieldName(jparser, expectedFieldName);

    //move to the value token
    jparser.nextToken();
    return jparser.getValueAsBoolean();
}
 

private Object readObject(JsonParser p, DeserializationContext ctxt) throws IOException,
    NoSuchMethodException,
    InvocationTargetException {
    Object val = null;
    JsonToken next = p.currentToken();
    switch (next) {
        // Primitive Types
        case VALUE_TRUE:
        case VALUE_FALSE:
            val = p.getValueAsBoolean();
            break;

        case VALUE_STRING:
            val = p.getText();
            break;

        case VALUE_NUMBER_FLOAT:
        case VALUE_NUMBER_INT:
            val = p.getNumberValue();
            break;

        // Encoded Object information
        case START_ARRAY:
            val = readEncoded(p, ctxt);
            break;

        default:
            throw new JsonParseException(p, "Object encoding not understood " + next);
    }
    return val;
}
 

@Override
public Object readNext(JSONReader reader, JsonParser p) throws IOException
{
    // NOTE: only cases where we can optimize
    switch (_typeId) {
    // Textual types, related:
    case SER_STRING:
    case SER_CHARACTER_SEQUENCE:
        return _nextString(p);

    case SER_CHAR_ARRAY:
        String str = _nextString(p);
        return (str == null) ? null : str.toCharArray();

    // Number types:

    case SER_NUMBER_SHORT: // fall through
        return Short.valueOf((short) _nextInt(p));

    case SER_NUMBER_INTEGER:
        return Integer.valueOf(_nextInt(p));

    case SER_NUMBER_LONG:
        return Long.valueOf(_nextLong(p));

    // Other scalar types:

    case SER_BOOLEAN:
        {
            Boolean b = p.nextBooleanValue();
            if (b != null) {
                return b;
            }
            return p.getValueAsBoolean();
        }
    }

    p.nextToken();
    return read(reader, p);
}
 

private static Boolean getBooleanValue(JsonParser p) throws IOException {
    JsonToken t = p.nextToken();
    if (t !=  JsonToken.VALUE_TRUE && t != JsonToken.VALUE_FALSE) {
        throw new RuntimeException("Error while reading field '" + p.getCurrentName() + "'. Expected boolean value [" + t + "]");
    }
    return p.getValueAsBoolean();
}
 

@Override
public Boolean parse(JsonParser parser, Field field) throws IOException {
    return isValid(parser) ? parser.getValueAsBoolean() : null;
}
 

@Override
    public Object read(JSONReader reader, JsonParser p) throws IOException
    {
        switch (_typeId) {

        case SER_INT_ARRAY:
            return _readIntArray(p);

        case SER_TREE_NODE:
            return reader.readTree();

        // Textual types, related:
        case SER_STRING:
        case SER_CHARACTER_SEQUENCE:
            return p.getValueAsString();
        case SER_CHAR_ARRAY:
            return p.getValueAsString().toCharArray();
        case SER_BYTE_ARRAY:
            return _readBinary(p);

        // Number types:
            
        case SER_NUMBER_FLOAT: // fall through
            return Float.valueOf((float) p.getValueAsDouble());
        case SER_NUMBER_DOUBLE:
            return p.getValueAsDouble();

        case SER_NUMBER_BYTE: // fall through
            return (byte) p.getValueAsInt();
            
        case SER_NUMBER_SHORT: // fall through
            return (short) p.getValueAsInt();
        case SER_NUMBER_INTEGER:
            return p.getValueAsInt();
        case SER_NUMBER_LONG:
            return p.getValueAsLong();

        case SER_NUMBER_BIG_DECIMAL:
            return p.getDecimalValue();

        case SER_NUMBER_BIG_INTEGER:
            return p.getBigIntegerValue();

        // Other scalar types:

        case SER_BOOLEAN:
            return p.getValueAsBoolean();
            
        case SER_CHAR:
            {
                String str = p.getValueAsString();
                return (str == null || str.isEmpty()) ? ' ' : str.charAt(0);
            }
            
        case SER_CALENDAR:
            {
                long l = _fetchLong(p);
                Calendar cal = Calendar.getInstance();
                cal.setTimeInMillis(l);
                return cal;
            }

        case SER_DATE:
            return new Date(_fetchLong(p));

        case SER_CLASS:
        {
            String v = p.getValueAsString();
            try {
                return Class.forName(v);
            } catch (Exception e) {
                throw new JSONObjectException("Failed to bind java.lang.Class from value '"+v+"'");
            }
        }
        case SER_FILE:
            return new File(p.getValueAsString());
        case SER_UUID:
            return UUID.fromString(p.getValueAsString());
        case SER_URL:
            return new URL(p.getValueAsString());
        case SER_URI:
        
            return URI.create(p.getValueAsString());

//        case SER_MAP:
//        case SER_LIST:
//        case SER_COLLECTION:
//        case SER_OBJECT_ARRAY:
            // should never get here: we have dedicated readers
        default: // types that shouldn't get here
        //case SER_ENUM:
        }
        
        throw JSONObjectException.from(p,
                "Can not create a "+_valueType.getName()+" instance out of "+_tokenDesc(p));
    }