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https://issues.apache.org/jira/browse/KYLIN-3290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16692816#comment-16692816
]
ASF GitHub Bot commented on KYLIN-3290:
---------------------------------------
shaofengshi closed pull request #351: KYLIN-3290 Leverage
getDecalredConstructor().newInstance() instead of newInstance()
URL: https://github.com/apache/kylin/pull/351
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/core-common/src/main/java/org/apache/kylin/common/util/ClassUtil.java
b/core-common/src/main/java/org/apache/kylin/common/util/ClassUtil.java
index cd78fe0e01..5019b21053 100644
--- a/core-common/src/main/java/org/apache/kylin/common/util/ClassUtil.java
+++ b/core-common/src/main/java/org/apache/kylin/common/util/ClassUtil.java
@@ -85,7 +85,7 @@ private static String forRenamedClass(String name) {
public static Object newInstance(String clz) {
try {
- return forName(clz, Object.class).newInstance();
+ return forName(clz,
Object.class).getDeclaredConstructor().newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/DictionaryInfoSerializer.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/DictionaryInfoSerializer.java
index ee88ea7cb3..96d34a1439 100644
---
a/core-dictionary/src/main/java/org/apache/kylin/dict/DictionaryInfoSerializer.java
+++
b/core-dictionary/src/main/java/org/apache/kylin/dict/DictionaryInfoSerializer.java
@@ -21,6 +21,7 @@
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
import org.apache.kylin.common.persistence.Serializer;
import org.apache.kylin.common.util.ClassUtil;
@@ -63,14 +64,19 @@ public DictionaryInfo deserialize(DataInputStream in)
throws IOException {
if (infoOnly == false) {
Dictionary<String> dict;
try {
- dict = (Dictionary<String>)
ClassUtil.forName(obj.getDictionaryClass(), Dictionary.class).newInstance();
+ dict = (Dictionary<String>)
ClassUtil.forName(obj.getDictionaryClass(),
Dictionary.class).getDeclaredConstructor().newInstance();
} catch (InstantiationException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
+ } catch (NoSuchMethodException e) {
+ throw new RuntimeException(e);
+ } catch (InvocationTargetException e) {
+ throw new RuntimeException(e);
}
+
dict.readFields(in);
obj.setDictionaryObject(dict);
}
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/DictionarySerializer.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/DictionarySerializer.java
index 72dc9953c3..23f2b88608 100644
---
a/core-dictionary/src/main/java/org/apache/kylin/dict/DictionarySerializer.java
+++
b/core-dictionary/src/main/java/org/apache/kylin/dict/DictionarySerializer.java
@@ -41,7 +41,7 @@ private DictionarySerializer() {
try {
final DataInputStream dataInputStream = new
DataInputStream(inputStream);
final String type = dataInputStream.readUTF();
- final Dictionary<?> dictionary = ClassUtil.forName(type,
Dictionary.class).newInstance();
+ final Dictionary<?> dictionary = ClassUtil.forName(type,
Dictionary.class).getDeclaredConstructor().newInstance();
dictionary.readFields(dataInputStream);
return dictionary;
} catch (Exception e) {
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary.java
index 1377e8ef13..8e5979289d 100644
--- a/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary.java
+++ b/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary.java
@@ -49,7 +49,7 @@ protected boolean isNullObjectForm(T value) {
@Override
protected void setConverterByName(String converterName) throws Exception {
converterName = "org.apache.kylin.dict.Number2BytesConverter";
- this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
((Number2BytesConverter)this.bytesConvert).setMaxDigitsBeforeDecimalPoint(Number2BytesConverter.MAX_DIGITS_BEFORE_DECIMAL_POINT_LEGACY);
}
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary2.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary2.java
index 0efe9362ca..24700ca48d 100644
--- a/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary2.java
+++ b/core-dictionary/src/main/java/org/apache/kylin/dict/NumberDictionary2.java
@@ -40,7 +40,7 @@ public NumberDictionary2(byte[] trieBytes) {
@Override
protected void setConverterByName(String converterName) throws Exception {
converterName = "org.apache.kylin.dict.Number2BytesConverter";
- this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
}
}
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionary.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionary.java
index 8303bb06a6..b0eb5bb98a 100644
--- a/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionary.java
+++ b/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionary.java
@@ -126,7 +126,7 @@ private void init(byte[] trieBytes) {
}
protected void setConverterByName(String converterName) throws Exception {
- this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ this.bytesConvert = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
}
@Override
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionaryForest.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionaryForest.java
index 4642cf4dd4..3d6d781ac9 100644
---
a/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionaryForest.java
+++
b/core-dictionary/src/main/java/org/apache/kylin/dict/TrieDictionaryForest.java
@@ -211,7 +211,7 @@ public void readFields(DataInput in) throws IOException {
String converterName = in.readUTF();
BytesConverter<T> bytesConverter = null;
if (converterName.isEmpty() == false)
- bytesConverter = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ bytesConverter = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
//init accuOffset
int accuSize = in.readInt();
ArrayList<Integer> accuOffset = new ArrayList<>();
diff --git
a/core-dictionary/src/main/java/org/apache/kylin/dict/global/GlobalDictHDFSStore.java
b/core-dictionary/src/main/java/org/apache/kylin/dict/global/GlobalDictHDFSStore.java
index f286085d1c..17ced1cb35 100644
---
a/core-dictionary/src/main/java/org/apache/kylin/dict/global/GlobalDictHDFSStore.java
+++
b/core-dictionary/src/main/java/org/apache/kylin/dict/global/GlobalDictHDFSStore.java
@@ -316,7 +316,7 @@ public GlobalDictMetadata readIndexFile(Path dir) throws
IOException {
String converterName = in.readUTF();
BytesConverter converter;
try {
- converter = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ converter = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
} catch (Exception e) {
throw new RuntimeException("Fail to instantiate
BytesConverter: " + converterName, e);
}
@@ -386,7 +386,7 @@ public GlobalDictMetadata readIndexFile(Path dir) throws
IOException {
String converterName = in.readUTF();
BytesConverter converter;
try {
- converter = ClassUtil.forName(converterName,
BytesConverter.class).newInstance();
+ converter = ClassUtil.forName(converterName,
BytesConverter.class).getDeclaredConstructor().newInstance();
} catch (Exception e) {
throw new RuntimeException("Fail to instantiate
BytesConverter: " + converterName, e);
}
diff --git a/kylin-it/src/test/java/org/apache/kylin/jdbc/ITJDBCDriverTest.java
b/kylin-it/src/test/java/org/apache/kylin/jdbc/ITJDBCDriverTest.java
index eb3c773c2a..5a2051f593 100644
--- a/kylin-it/src/test/java/org/apache/kylin/jdbc/ITJDBCDriverTest.java
+++ b/kylin-it/src/test/java/org/apache/kylin/jdbc/ITJDBCDriverTest.java
@@ -96,7 +96,7 @@ protected static void startJetty() throws Exception {
protected Connection getConnection() throws Exception {
- Driver driver = (Driver)
Class.forName("org.apache.kylin.jdbc.Driver").newInstance();
+ Driver driver = (Driver)
Class.forName("org.apache.kylin.jdbc.Driver").getDeclaredConstructor().newInstance();
Properties info = new Properties();
info.put("user", "ADMIN");
info.put("password", "KYLIN");
diff --git a/query/src/main/java/org/apache/kylin/query/QueryConnection.java
b/query/src/main/java/org/apache/kylin/query/QueryConnection.java
index 1ea715fefb..3ef4b77073 100644
--- a/query/src/main/java/org/apache/kylin/query/QueryConnection.java
+++ b/query/src/main/java/org/apache/kylin/query/QueryConnection.java
@@ -19,6 +19,7 @@
package org.apache.kylin.query;
import java.io.File;
+import java.lang.reflect.InvocationTargetException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
@@ -38,9 +39,9 @@ public static Connection getConnection(String project) throws
SQLException {
try {
Class<?> aClass =
Thread.currentThread().getContextClassLoader()
.loadClass("org.apache.calcite.jdbc.Driver");
- Driver o = (Driver) aClass.newInstance();
+ Driver o = (Driver)
aClass.getDeclaredConstructor().newInstance();
DriverManager.registerDriver(o);
- } catch (ClassNotFoundException | InstantiationException |
IllegalAccessException e) {
+ } catch (ClassNotFoundException | InstantiationException |
IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
e.printStackTrace();
}
isRegister = true;
diff --git
a/query/src/main/java/org/apache/kylin/query/relnode/OLAPAggregateRel.java
b/query/src/main/java/org/apache/kylin/query/relnode/OLAPAggregateRel.java
index fb64c565d7..5ea043746a 100644
--- a/query/src/main/java/org/apache/kylin/query/relnode/OLAPAggregateRel.java
+++ b/query/src/main/java/org/apache/kylin/query/relnode/OLAPAggregateRel.java
@@ -110,7 +110,7 @@
for (String func : udafs.keySet()) {
try {
AGGR_FUNC_PARAM_AS_MEASURE_MAP.put(func,
- ((ParamAsMeasureCount)
(udafs.get(func).newInstance())).getParamAsMeasureCount());
+ ((ParamAsMeasureCount)
(udafs.get(func).getDeclaredConstructor().newInstance())).getParamAsMeasureCount());
} catch (Exception e) {
throw new RuntimeException(e);
}
diff --git
a/server-base/src/test/java/org/apache/kylin/rest/bean/BeanValidator.java
b/server-base/src/test/java/org/apache/kylin/rest/bean/BeanValidator.java
index a7aea99915..256a20e27e 100644
--- a/server-base/src/test/java/org/apache/kylin/rest/bean/BeanValidator.java
+++ b/server-base/src/test/java/org/apache/kylin/rest/bean/BeanValidator.java
@@ -67,7 +67,7 @@
try {
Object value = buildValue(returnType);
- T bean = clazz.newInstance();
+ T bean = clazz.getDeclaredConstructor().newInstance();
setter.invoke(bean, value);
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> Avoid calling Class#newInstance
> -------------------------------
>
> Key: KYLIN-3290
> URL: https://issues.apache.org/jira/browse/KYLIN-3290
> Project: Kylin
> Issue Type: Task
> Reporter: Ted Yu
> Assignee: Wu Bin
> Priority: Minor
> Labels: jdk
> Fix For: v2.6.0
>
>
> Class#newInstance is deprecated starting in Java 9 -
> https://bugs.openjdk.java.net/browse/JDK-6850612 - because it may throw
> undeclared checked exceptions.
> The suggested replacement is getDeclaredConstructor().newInstance(), which
> wraps the checked exceptions in InvocationException.
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