org.gradoop.common.model.impl.properties.strategies

Class DoubleStrategy

java.lang.Object

org.gradoop.common.model.impl.properties.strategies.AbstractFixSizedPropertyValueStrategy<Double>

org.gradoop.common.model.impl.properties.strategies.DoubleStrategy

All Implemented Interfaces:

PropertyValueStrategy<Double>

public class DoubleStrategy
extends AbstractFixSizedPropertyValueStrategy<Double>

Strategy class for handling PropertyValue operations with a value of the type Double.

Constructor Summary

Constructors

Constructor and Description
DoubleStrategy()

Method Summary

Modifier and Type	Method and Description
int	compare(Double value, Object other) Compares two objects.
Double	get(byte[] bytes) Deserializes an object from the provided byte array.
byte[]	getRawBytes(Double value) Serializes the given object.
byte	getRawType() Gets a byte which represents the data type the specific strategy handles.
Class<Double>	getType() Gets the class of the data type the specific strategy handles.
boolean	is(Object value) Checks if given object is an instance of the data type the specific strategy handles.
Double	read(org.apache.flink.core.memory.DataInputView inputView, byte typeByte) Reads raw bytes from the given DataInputView and deserializes the contained object.

Methods inherited from class org.gradoop.common.model.impl.properties.strategies.AbstractFixSizedPropertyValueStrategy

write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleStrategy

public DoubleStrategy()

Method Detail

read

public Double read(org.apache.flink.core.memory.DataInputView inputView,
                   byte typeByte)
            throws IOException

Description copied from interface: PropertyValueStrategy

Reads raw bytes from the given DataInputView and deserializes the contained object.

Parameters:

inputView - containing serialized object.

typeByte - byte needed to indicate whether serialized object has a variable length.

Returns:

deserialized object.

Throws:

IOException - when reading or deserialization of the object fails.

compare

public int compare(Double value,
                   Object other)

Description copied from interface: PropertyValueStrategy

Compares two objects.

Parameters:

value - first object.

other - second object.

Returns:

a negative integer, zero, or a positive integer as first object is less than, equal to, or greater than the second object.

is

public boolean is(Object value)

Description copied from interface: PropertyValueStrategy

Checks if given object is an instance of the data type the specific strategy handles.

Parameters:

value - to be checked.

Returns:

true if value is an instance of the data type this strategy handles. False otherwise.

getType

public Class<Double> getType()

Description copied from interface: PropertyValueStrategy

Gets the class of the data type the specific strategy handles.

Returns:

class of the type handled by this strategy.

get

public Double get(byte[] bytes)

Description copied from interface: PropertyValueStrategy

Deserializes an object from the provided byte array.

Parameters:

bytes - representing a serialized object.

Returns:

an instance of the type handled by this strategy.

getRawType

public byte getRawType()

Description copied from interface: PropertyValueStrategy

Gets a byte which represents the data type the specific strategy handles.

Returns:

a byte.

getRawBytes

public byte[] getRawBytes(Double value)

Description copied from interface: PropertyValueStrategy

Serializes the given object. The argument value can not be null.

Parameters:

value - the object to be serialized.

Returns:

byte array representation of the provided object.