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markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
commit 35f06b3e9669de9653746dbca4ca415475870eae
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Thu Sep 26 16:33:02 2024 +0100
Complete fix for BZ 69338. Optimise "not empty"
---
.../{AstEmpty.java => AstAbstractEmpty.java} | 37 ++++++++++----------
java/org/apache/el/parser/AstEmpty.java | 39 ++--------------------
java/org/apache/el/parser/AstNotEmpty.java | 24 +++++++++++++
java/org/apache/el/parser/ELParser.jjt | 3 ++
webapps/docs/changelog.xml | 3 +-
5 files changed, 50 insertions(+), 56 deletions(-)
diff --git a/java/org/apache/el/parser/AstEmpty.java
b/java/org/apache/el/parser/AstAbstractEmpty.java
similarity index 62%
copy from java/org/apache/el/parser/AstEmpty.java
copy to java/org/apache/el/parser/AstAbstractEmpty.java
index d01e7f18ec..844d183291 100644
--- a/java/org/apache/el/parser/AstEmpty.java
+++ b/java/org/apache/el/parser/AstAbstractEmpty.java
@@ -24,36 +24,37 @@ import javax.el.ELException;
import org.apache.el.lang.EvaluationContext;
-/**
- * @author Jacob Hookom [ja...@hookom.net]
- */
-public final class AstEmpty extends SimpleNode {
+public abstract class AstAbstractEmpty extends SimpleNode {
+
+ private final Boolean RETURN_EMPTY;
+ private final Boolean RETURN_NOT_EMPTY;
+
- public AstEmpty(int id) {
+ public AstAbstractEmpty(int id, boolean invert) {
super(id);
+ if (invert) {
+ RETURN_EMPTY = Boolean.FALSE;
+ RETURN_NOT_EMPTY = Boolean.TRUE;
+ } else {
+ RETURN_EMPTY = Boolean.TRUE;
+ RETURN_NOT_EMPTY = Boolean.FALSE;
+ }
}
-
@Override
public Class<?> getType(EvaluationContext ctx) throws ELException {
return Boolean.class;
}
-
@Override
public Object getValue(EvaluationContext ctx) throws ELException {
Object obj = this.children[0].getValue(ctx);
- if (obj == null) {
- return Boolean.TRUE;
- } else if (obj instanceof String) {
- return Boolean.valueOf(((String) obj).length() == 0);
- } else if (obj instanceof Object[]) {
- return Boolean.valueOf(((Object[]) obj).length == 0);
- } else if (obj instanceof Collection<?>) {
- return Boolean.valueOf(((Collection<?>) obj).isEmpty());
- } else if (obj instanceof Map<?,?>) {
- return Boolean.valueOf(((Map<?,?>) obj).isEmpty());
+ if (obj == null || obj instanceof String && ((String) obj).length() ==
0 ||
+ obj instanceof Object[] && ((Object[]) obj).length == 0 ||
+ obj instanceof Collection<?> && ((Collection<?>)
obj).isEmpty() ||
+ obj instanceof Map<?,?> && ((Map<?,?>) obj).isEmpty()) {
+ return RETURN_EMPTY;
}
- return Boolean.FALSE;
+ return RETURN_NOT_EMPTY;
}
}
diff --git a/java/org/apache/el/parser/AstEmpty.java
b/java/org/apache/el/parser/AstEmpty.java
index d01e7f18ec..0517091b9c 100644
--- a/java/org/apache/el/parser/AstEmpty.java
+++ b/java/org/apache/el/parser/AstEmpty.java
@@ -17,43 +17,8 @@
/* Generated By:JJTree: Do not edit this line. AstEmpty.java */
package org.apache.el.parser;
-import java.util.Collection;
-import java.util.Map;
-
-import javax.el.ELException;
-
-import org.apache.el.lang.EvaluationContext;
-
-/**
- * @author Jacob Hookom [ja...@hookom.net]
- */
-public final class AstEmpty extends SimpleNode {
-
+public final class AstEmpty extends AstAbstractEmpty {
public AstEmpty(int id) {
- super(id);
- }
-
-
- @Override
- public Class<?> getType(EvaluationContext ctx) throws ELException {
- return Boolean.class;
- }
-
-
- @Override
- public Object getValue(EvaluationContext ctx) throws ELException {
- Object obj = this.children[0].getValue(ctx);
- if (obj == null) {
- return Boolean.TRUE;
- } else if (obj instanceof String) {
- return Boolean.valueOf(((String) obj).length() == 0);
- } else if (obj instanceof Object[]) {
- return Boolean.valueOf(((Object[]) obj).length == 0);
- } else if (obj instanceof Collection<?>) {
- return Boolean.valueOf(((Collection<?>) obj).isEmpty());
- } else if (obj instanceof Map<?,?>) {
- return Boolean.valueOf(((Map<?,?>) obj).isEmpty());
- }
- return Boolean.FALSE;
+ super(id, false);
}
}
diff --git a/java/org/apache/el/parser/AstNotEmpty.java
b/java/org/apache/el/parser/AstNotEmpty.java
new file mode 100644
index 0000000000..0066c07afb
--- /dev/null
+++ b/java/org/apache/el/parser/AstNotEmpty.java
@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Generated By:JJTree: Do not edit this line. AstEmpty.java */
+package org.apache.el.parser;
+
+public final class AstNotEmpty extends AstAbstractEmpty {
+ public AstNotEmpty(int id) {
+ super(id, true);
+ }
+}
diff --git a/java/org/apache/el/parser/ELParser.jjt
b/java/org/apache/el/parser/ELParser.jjt
index 01364520e1..c28b8f19ce 100644
--- a/java/org/apache/el/parser/ELParser.jjt
+++ b/java/org/apache/el/parser/ELParser.jjt
@@ -255,6 +255,9 @@ void Multiplication() : {}
void Unary() : {}
{
<MINUS> Unary() #Negative
+ |
+ LOOKAHEAD(2)
+ (<NOT0>|<NOT1>) <EMPTY> Unary() #NotEmpty
|
(<NOT0>|<NOT1>) Unary() #Not
|
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 61001544a9..109168f0b4 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -167,7 +167,8 @@
</fix>
<fix>
<bug>69338</bug>: Improve the performance of processing expressions
that
- include AND or OR operations with more than two operands. (markt)
+ include AND or OR operations with more than two operands and
expressions
+ that use <code>not empty</code>. (markt)
</fix>
</changelog>
</subsection>
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