@Experimental public class RowCoder extends CustomCoder<Row>
Coder.Context, Coder.NonDeterministicException| Modifier and Type | Method and Description |
|---|---|
static <T> Coder<T> |
coderForFieldType(Schema.FieldType fieldType)
Returns the coder used for a given primitive type.
|
boolean |
consistentWithEquals()
|
Row |
decode(java.io.InputStream inStream)
Decodes a value of type
T from the given input stream in the given context. |
void |
encode(Row value,
java.io.OutputStream outStream)
Encodes the given value of type
T onto the given output stream. |
static long |
estimatedSizeBytes(Row row)
Return the estimated serialized size of a give row object.
|
Schema |
getSchema() |
static RowCoder |
of(Schema schema) |
void |
verifyDeterministic()
Throw
Coder.NonDeterministicException if the coding is not deterministic. |
getCoderArgumentsdecode, encode, getEncodedElementByteSize, getEncodedTypeDescriptor, isRegisterByteSizeObserverCheap, registerByteSizeObserver, structuralValue, verifyDeterministic, verifyDeterministicpublic void encode(Row value, java.io.OutputStream outStream) throws java.io.IOException
CoderT onto the given output stream.encode in class Coder<Row>java.io.IOException - if writing to the OutputStream fails for some reasonCoderException - if the value could not be encoded for some reasonpublic Row decode(java.io.InputStream inStream) throws java.io.IOException
CoderT from the given input stream in the given context. Returns the
decoded value.decode in class Coder<Row>java.io.IOException - if reading from the InputStream fails for some reasonCoderException - if the value could not be decoded for some reasonpublic Schema getSchema()
public void verifyDeterministic()
throws Coder.NonDeterministicException
CustomCoderCoder.NonDeterministicException if the coding is not deterministic.
In order for a Coder to be considered deterministic, the following must be true:
Object.equals() or Comparable.compareTo(), if supported) have the same encoding.
Coder always produces a canonical encoding, which is the same for an instance
of an object even if produced on different computers at different times.
verifyDeterministic in class CustomCoder<Row>Coder.NonDeterministicException - if this coder is not deterministic.public boolean consistentWithEquals()
Codertrue if this Coder is injective with respect to Object.equals(java.lang.Object).
Whenever the encoded bytes of two values are equal, then the original values are equal
according to Objects.equals(). Note that this is well-defined for null.
This condition is most notably false for arrays. More generally, this condition is false
whenever equals() compares object identity, rather than performing a
semantic/structural comparison.
By default, returns false.
consistentWithEquals in class Coder<Row>public static <T> Coder<T> coderForFieldType(Schema.FieldType fieldType)
public static long estimatedSizeBytes(Row row)