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[jvm-packages] remove the dep of com.fasterxml.jackson (#7791)

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Bobby Wang 2022-04-08 13:04:34 +08:00 committed by GitHub
parent 89d6419fd5
commit 729d227b89
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2 changed files with 35 additions and 42 deletions
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5
jvm-packages/xgboost4j-gpu/pom.xml
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@ -20,11 +20,6 @@
<classifier>${cudf.classifier}</classifier> <classifier>${cudf.classifier}</classifier>
<scope>provided</scope> <scope>provided</scope>
</dependency> </dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.5.1</version>
</dependency>
<dependency> <dependency>
<groupId>org.apache.hadoop</groupId> <groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-hdfs</artifactId> <artifactId>hadoop-hdfs</artifactId>

72
jvm-packages/xgboost4j-gpu/src/main/java/ml/dmlc/xgboost4j/gpu/java/CudfUtils.java
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@ -1,5 +1,5 @@
/* /*
Copyright (c) 2021 by Contributors Copyright (c) 2021-2022 by Contributors
Licensed under the Apache License, Version 2.0 (the "License"); Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License. you may not use this file except in compliance with the License.
@ -16,15 +16,7 @@
package ml.dmlc.xgboost4j.gpu.java; package ml.dmlc.xgboost4j.gpu.java;
import java.io.ByteArrayOutputStream; import java.util.ArrayList;
import java.io.IOException;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.JsonNodeFactory;
import com.fasterxml.jackson.databind.node.ObjectNode;
/** /**
* Cudf utilities to build cuda array interface against {@link CudfColumn} * Cudf utilities to build cuda array interface against {@link CudfColumn}
@ -42,58 +34,64 @@ class CudfUtils {
// Helper class to build array interface string // Helper class to build array interface string
private static class Builder { private static class Builder {
private JsonNodeFactory nodeFactory = new JsonNodeFactory(false); private ArrayList<String> colArrayInterfaces = new ArrayList<String>();
private ArrayNode rootArrayNode = nodeFactory.arrayNode();
private Builder add(CudfColumn... columns) { private Builder add(CudfColumn... columns) {
if (columns == null || columns.length <= 0) { if (columns == null || columns.length <= 0) {
throw new IllegalArgumentException("At least one ColumnData is required."); throw new IllegalArgumentException("At least one ColumnData is required.");
} }
for (CudfColumn cd : columns) { for (CudfColumn cd : columns) {
rootArrayNode.add(buildColumnObject(cd)); colArrayInterfaces.add(buildColumnObject(cd));
} }
return this; return this;
} }
private String build() { private String build() {
try { StringBuilder builder = new StringBuilder();
ByteArrayOutputStream bos = new ByteArrayOutputStream(); builder.append("[");
JsonGenerator jsonGen = new JsonFactory().createGenerator(bos); for (int i = 0; i < colArrayInterfaces.size(); i++) {
new ObjectMapper().writeTree(jsonGen, rootArrayNode); builder.append(colArrayInterfaces.get(i));
return bos.toString(); if (i != colArrayInterfaces.size() - 1) {
} catch (IOException ie) { builder.append(",");
ie.printStackTrace(); }
throw new RuntimeException("Failed to build array interface. Error: " + ie);
} }
builder.append("]");
return builder.toString();
} }
private ObjectNode buildColumnObject(CudfColumn column) { /** build the whole column information including data and valid info */
private String buildColumnObject(CudfColumn column) {
if (column.getDataPtr() == 0) { if (column.getDataPtr() == 0) {
throw new IllegalArgumentException("Empty column data is NOT accepted!"); throw new IllegalArgumentException("Empty column data is NOT accepted!");
} }
if (column.getTypeStr() == null || column.getTypeStr().isEmpty()) { if (column.getTypeStr() == null || column.getTypeStr().isEmpty()) {
throw new IllegalArgumentException("Empty type string is NOT accepted!"); throw new IllegalArgumentException("Empty type string is NOT accepted!");
} }
ObjectNode colDataObj = buildMetaObject(column.getDataPtr(), column.getShape(),
column.getTypeStr());
StringBuilder builder = new StringBuilder();
String colData = buildMetaObject(column.getDataPtr(), column.getShape(),
column.getTypeStr());
builder.append("{");
builder.append(colData);
if (column.getValidPtr() != 0 && column.getNullCount() != 0) { if (column.getValidPtr() != 0 && column.getNullCount() != 0) {
ObjectNode validObj = buildMetaObject(column.getValidPtr(), column.getShape(), "<t1"); String validString = buildMetaObject(column.getValidPtr(), column.getShape(), "<t1");
colDataObj.set("mask", validObj); builder.append(",\"mask\":");
builder.append("{");
builder.append(validString);
builder.append("}");
} }
return colDataObj; builder.append("}");
return builder.toString();
} }
private ObjectNode buildMetaObject(long ptr, long shape, final String typeStr) { /** build the base information of a column */
ObjectNode objNode = nodeFactory.objectNode(); private String buildMetaObject(long ptr, long shape, final String typeStr) {
ArrayNode shapeNode = objNode.putArray("shape"); StringBuilder builder = new StringBuilder();
shapeNode.add(shape); builder.append("\"shape\":[" + shape + "],");
ArrayNode dataNode = objNode.putArray("data"); builder.append("\"data\":[" + ptr + "," + "false" + "],");
dataNode.add(ptr) builder.append("\"typestr\":\"" + typeStr + "\",");
.add(false); builder.append("\"version\":" + 1);
objNode.put("typestr", typeStr) return builder.toString();
.put("version", 1);
return objNode;
} }
} }