/** Deserializes the fields of this object from in. */
public void readFields(DataInput in) throws IOException {
date = in.readUTF();
int byteSize = in.readInt();
byte[] priceArray = new byte[byteSize];
in.readFully(priceArray);
price = Bytes.toBigDecimal(priceArray);
}
/**
* Builds Object from Bytes Picked from Hbase.
*
* @param b
* @param klass
* @return
*/
public static Object toObject(byte[] b, Class<?> klass) {
if (klass.isAssignableFrom(String.class)) {
return Bytes.toString(b);
} else if (klass.equals(int.class) || klass.isAssignableFrom(Integer.class)) {
return Bytes.toInt(b);
} else if (klass.equals(long.class) || klass.isAssignableFrom(Long.class)) {
return Bytes.toLong(b);
} else if (klass.equals(boolean.class) || klass.isAssignableFrom(Boolean.class)) {
return Bytes.toBoolean(b);
} else if (klass.equals(double.class) || klass.isAssignableFrom(Double.class)) {
return Bytes.toDouble(b);
} else if (klass.equals(float.class) || klass.isAssignableFrom(Float.class)) {
return Bytes.toFloat(b);
} else if (klass.equals(short.class) || klass.isAssignableFrom(Short.class)) {
return Bytes.toShort(b);
} else if (klass.equals(BigDecimal.class)) {
return Bytes.toBigDecimal(b);
} else {
throw new MetaModelException("Could Not find a suitable Type for " + klass.getName());
}
}
/**
* Converts the given value from bytes based on data type and cardinality information for the
* given property. For 'many' or multi-valued properties, if the SDO Java type for the property is
* not already String, the value is first converted from a String using the SDO conversion which
* uses java.util.Arrays formatting, resulting in an array of primitive types. For non 'many' or
* singular properties, only the HBase Bytes utility is used.
*
* @param targetProperty the property
* @param value the bytes value
* @return the converted object
* @throws IllegalArgumentException if the given property is not a data type property
*/
public Object fromBytes(Property targetProperty, byte[] value) {
Object result = null;
if (!targetProperty.getType().isDataType())
throw new IllegalArgumentException(
"property " + targetProperty.toString() + " is not a datatype property");
DataType targetDataType = DataType.valueOf(targetProperty.getType().getName());
switch (targetDataType) {
// Data types stored as String bytes in HBase
case String:
case Strings:
case URI:
case Month:
case MonthDay:
case Day:
case Time:
case Year:
case YearMonth:
case YearMonthDay:
case Duration:
String resultStr = Bytes.toString(value);
result = DataConverter.INSTANCE.fromString(targetProperty, resultStr);
break;
case Date:
resultStr = Bytes.toString(value);
result = DataConverter.INSTANCE.fromString(targetProperty, resultStr);
break;
case DateTime:
// NOTE: remember datetime is a String Java representation in SDO 2.1
resultStr = Bytes.toString(value);
result = DataConverter.INSTANCE.fromString(targetProperty, resultStr);
break;
// Data types stored by directly converting from primitive types to bytes in HBase.
// TODO: for these data types determine if there is a way to "delimit" multiple values yet
// not take the extra and expensive step of first converting to delimited String.
case Decimal:
if (!targetProperty.isMany()) result = Bytes.toBigDecimal(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Bytes:
if (!targetProperty.isMany()) result = value; // already bytes
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Byte:
if (!targetProperty.isMany()) {
// NOTE: no toByte method as would expect as there is opposite method, see below
// e.g. Bytes.toByte(value);
if (value != null) {
if (value.length > 2)
log.warn(
"truncating "
+ String.valueOf(value.length)
+ " length byte array for target data type 'byte'");
result = value[0];
}
} else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Boolean:
if (!targetProperty.isMany()) result = Bytes.toBoolean(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Character:
if (!targetProperty.isMany()) result = Character.valueOf(Bytes.toString(value).charAt(0));
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Double:
if (!targetProperty.isMany()) result = Bytes.toDouble(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Float:
if (!targetProperty.isMany()) result = Bytes.toFloat(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Int:
if (!targetProperty.isMany()) result = Bytes.toInt(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Integer:
if (!targetProperty.isMany()) result = new BigInteger(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Long:
if (!targetProperty.isMany()) result = Bytes.toLong(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Short:
if (!targetProperty.isMany()) result = Bytes.toShort(value);
else result = DataConverter.INSTANCE.fromString(targetProperty, Bytes.toString(value));
break;
case Object:
// FIXME: custom serialization?
default:
result = Bytes.toString(value);
break;
}
return result;
}
