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优化Array.newInstance

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redkale
2023-02-01 20:34:01 +08:00
parent 851c81e096
commit 1c1c54ea8a
4 changed files with 19 additions and 15 deletions
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7
src/main/java/org/redkale/net/http/HttpRequest.java
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@@ -7,7 +7,6 @@ package org.redkale.net.http;
import java.io.*;
import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.net.*;
import java.nio.ByteBuffer;
import java.nio.charset.*;
@@ -1248,9 +1247,9 @@ public class HttpRequest extends Request<HttpContext> {
*/
public <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass) {
if (this.annotations == null) {
return (T[]) Array.newInstance(annotationClass, 0);
return Creator.arrayFunction(annotationClass).apply(0);
}
T[] news = (T[]) Array.newInstance(annotationClass, this.annotations.length);
T[] news = Creator.arrayFunction(annotationClass).apply(this.annotations.length);
int index = 0;
for (Annotation ann : this.annotations) {
if (ann.getClass() == annotationClass) {
@@ -1258,7 +1257,7 @@ public class HttpRequest extends Request<HttpContext> {
}
}
if (index < 1) {
return (T[]) Array.newInstance(annotationClass, 0);
return Creator.arrayFunction(annotationClass).apply(0);
}
return Arrays.copyOf(news, index);
}

16
src/main/java/org/redkale/net/http/WebSocketParam.java
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@@ -6,8 +6,8 @@
package org.redkale.net.http;
import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.util.Arrays;
import org.redkale.util.Creator;
/**
*
@@ -27,22 +27,28 @@ public interface WebSocketParam {
default <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
for (Annotation ann : getAnnotations()) {
if (ann.getClass() == annotationClass) return (T) ann;
if (ann.getClass() == annotationClass) {
return (T) ann;
}
}
return null;
}
default <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass) {
Annotation[] annotations = getAnnotations();
if (annotations == null) return (T[]) Array.newInstance(annotationClass, 0);
T[] news = (T[]) Array.newInstance(annotationClass, annotations.length);
if (annotations == null) {
return Creator.arrayFunction(annotationClass).apply(0);
}
T[] news = Creator.arrayFunction(annotationClass).apply(annotations.length);
int index = 0;
for (Annotation ann : annotations) {
if (ann.getClass() == annotationClass) {
news[index++] = (T) ann;
}
}
if (index < 1) return (T[]) Array.newInstance(annotationClass, 0);
if (index < 1) {
return Creator.arrayFunction(annotationClass).apply(0);
}
return Arrays.copyOf(news, index);
}
}

6
src/main/java/org/redkale/source/CacheSource.java
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@@ -6,7 +6,7 @@
package org.redkale.source;
import java.io.Serializable;
import java.lang.reflect.*;
import java.lang.reflect.Type;
import java.util.*;
import java.util.concurrent.CompletableFuture;
import org.redkale.convert.Convert;
@@ -53,7 +53,7 @@ public interface CacheSource extends Resourcable {
public Map<String, byte[]> mgetBytes(final String... keys);
default <T> T[] mgets(final Type componentType, final String... keys) {
T[] rs = (T[]) Array.newInstance(TypeToken.typeToClass(componentType), keys.length);
T[] rs = (T[]) Creator.arrayFunction(TypeToken.typeToClass(componentType)).apply(keys.length);
Map<String, T> map = mget(componentType, keys);
for (int i = 0; i < keys.length; i++) {
rs[i] = map.get(keys[i]);
@@ -335,7 +335,7 @@ public interface CacheSource extends Resourcable {
default <T> CompletableFuture<T[]> mgetsAsync(final Type componentType, final String... keys) {
return mgetAsync(componentType, keys).thenApply(map -> {
T[] rs = (T[]) Array.newInstance(TypeToken.typeToClass(componentType), keys.length);
T[] rs = (T[]) Creator.arrayFunction(TypeToken.typeToClass(componentType)).apply(keys.length);
for (int i = 0; i < keys.length; i++) {
rs[i] = (T) map.get(keys[i]);
}

5
src/main/java/org/redkale/util/Creator.java
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@@ -802,9 +802,8 @@ public interface Creator<T> {
RedkaleClassLoader.putReflectionDeclaredConstructors(resultClazz, newDynName.replace('/', '.'));
return (IntFunction<T[]>) resultClazz.getDeclaredConstructor().newInstance();
} catch (Exception ex) {
//ex.printStackTrace(); //一般不会发生
//return t -> (T[]) Array.newInstance(clazz, t);
throw new RuntimeException(ex);
//ex.printStackTrace(); //一般不会发生, native-image在没有预编译情况下会报错
return t -> (T[]) Array.newInstance(clazz, t);
}
}
}