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[api] Make Batchifier serializable #2441

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Mar 5, 2023
Merged

[api] Make Batchifier serializable #2441

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3 changes: 2 additions & 1 deletion api/src/main/java/ai/djl/translate/Batchifier.java
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Expand Up @@ -14,6 +14,7 @@

import ai.djl.ndarray.NDList;

import java.io.Serializable;
import java.util.Arrays;
import java.util.stream.IntStream;

Expand All @@ -26,7 +27,7 @@
* as axis 0. Another implementation could be a concatenated batchifier for sequence elements that
* will concatenate the data elements along the time axis.
*/
public interface Batchifier {
public interface Batchifier extends Serializable {

Batchifier STACK = new StackBatchifier();

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4 changes: 3 additions & 1 deletion api/src/main/java/ai/djl/translate/PaddingStackBatchifier.java
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Expand Up @@ -27,9 +27,11 @@
*/
public final class PaddingStackBatchifier implements Batchifier {

private static final long serialVersionUID = 1L;

private List<Integer> arraysToPad;
private List<Integer> dimsToPad;
private List<NDArraySupplier> paddingSuppliers;
private transient List<NDArraySupplier> paddingSuppliers;
private List<Integer> paddingSizes;
private boolean includeValidLengths;

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2 changes: 2 additions & 0 deletions api/src/main/java/ai/djl/translate/SimplePaddingStackBatchifier.java
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Expand Up @@ -22,6 +22,8 @@
*/
public final class SimplePaddingStackBatchifier implements Batchifier {

private static final long serialVersionUID = 1L;

private float padding;

/**
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2 changes: 2 additions & 0 deletions api/src/main/java/ai/djl/translate/StackBatchifier.java
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Expand Up @@ -28,6 +28,8 @@
*/
public class StackBatchifier implements Batchifier {

private static final long serialVersionUID = 1L;

/** {@inheritDoc} */
@Override
public NDList batchify(NDList[] inputs) {
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