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Posted to commits@camel.apache.org by da...@apache.org on 2021/05/10 08:53:58 UTC
[camel] 01/03: CAMEL-16596: ScriptingLanguage SPI.
This is an automated email from the ASF dual-hosted git repository.
davsclaus pushed a commit to branch CAMEL-16593
in repository https://gitbox.apache.org/repos/asf/camel.git
commit 71f67a0968661a1ba2ab8e0e4abc003be4b24025
Author: Claus Ibsen <cl...@gmail.com>
AuthorDate: Mon May 10 10:20:56 2021 +0200
CAMEL-16596: ScriptingLanguage SPI.
---
.../apache/camel/language/ognl/OgnlLanguage.java | 26 +++++++++++-
.../org/apache/camel/language/ognl/MyUser.java} | 32 +++++++--------
.../language/ognl/OgnlScriptingLanguageTest.java | 48 ++++++++++++++++++++++
.../camel-ognl/src/test/resources/myuser.txt | 1 +
4 files changed, 89 insertions(+), 18 deletions(-)
diff --git a/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java b/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java
index 0911d31..d6ac77f 100644
--- a/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java
+++ b/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java
@@ -16,8 +16,14 @@
*/
package org.apache.camel.language.ognl;
+import java.util.Map;
+
+import ognl.Ognl;
+import ognl.OgnlContext;
import org.apache.camel.Expression;
+import org.apache.camel.ExpressionIllegalSyntaxException;
import org.apache.camel.Predicate;
+import org.apache.camel.spi.ScriptingLanguage;
import org.apache.camel.spi.annotations.Language;
import org.apache.camel.support.LanguageSupport;
@@ -25,7 +31,7 @@ import org.apache.camel.support.LanguageSupport;
* An <a href="http://www.ognl.org/">OGNL</a> {@link org.apache.camel.spi.Language} plugin
*/
@Language("ognl")
-public class OgnlLanguage extends LanguageSupport {
+public class OgnlLanguage extends LanguageSupport implements ScriptingLanguage {
@Override
public Predicate createPredicate(String expression) {
@@ -38,4 +44,22 @@ public class OgnlLanguage extends LanguageSupport {
expression = loadResource(expression);
return new OgnlExpression(this, expression, Object.class);
}
+
+ @Override
+ public <T> T evaluate(String script, Map<String, Object> bindings, Class<T> resultType) {
+ script = loadResource(script);
+ try {
+ Object compiled = Ognl.parseExpression(script);
+ OgnlContext oglContext = new OgnlContext();
+ if (bindings != null && !bindings.isEmpty()) {
+ oglContext.setValues(bindings);
+ }
+ // setup the class resolver from camel
+ oglContext.setClassResolver(new CamelClassResolver(getCamelContext().getClassResolver()));
+ Object value = Ognl.getValue(compiled, oglContext);
+ return getCamelContext().getTypeConverter().convertTo(resultType, value);
+ } catch (Exception e) {
+ throw new ExpressionIllegalSyntaxException(script, e);
+ }
+ }
}
diff --git a/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java b/components/camel-ognl/src/test/java/org/apache/camel/language/ognl/MyUser.java
similarity index 54%
copy from components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java
copy to components/camel-ognl/src/test/java/org/apache/camel/language/ognl/MyUser.java
index 0911d31..146a0d8 100644
--- a/components/camel-ognl/src/main/java/org/apache/camel/language/ognl/OgnlLanguage.java
+++ b/components/camel-ognl/src/test/java/org/apache/camel/language/ognl/MyUser.java
@@ -16,26 +16,24 @@
*/
package org.apache.camel.language.ognl;
-import org.apache.camel.Expression;
-import org.apache.camel.Predicate;
-import org.apache.camel.spi.annotations.Language;
-import org.apache.camel.support.LanguageSupport;
+public class MyUser {
-/**
- * An <a href="http://www.ognl.org/">OGNL</a> {@link org.apache.camel.spi.Language} plugin
- */
-@Language("ognl")
-public class OgnlLanguage extends LanguageSupport {
+ private String name;
+ private int age;
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
- @Override
- public Predicate createPredicate(String expression) {
- expression = loadResource(expression);
- return new OgnlExpression(this, expression, Boolean.class);
+ public int getAge() {
+ return age;
}
- @Override
- public Expression createExpression(String expression) {
- expression = loadResource(expression);
- return new OgnlExpression(this, expression, Object.class);
+ public void setAge(int age) {
+ this.age = age;
}
}
diff --git a/components/camel-ognl/src/test/java/org/apache/camel/language/ognl/OgnlScriptingLanguageTest.java b/components/camel-ognl/src/test/java/org/apache/camel/language/ognl/OgnlScriptingLanguageTest.java
new file mode 100644
index 0000000..2568744
--- /dev/null
+++ b/components/camel-ognl/src/test/java/org/apache/camel/language/ognl/OgnlScriptingLanguageTest.java
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+package org.apache.camel.language.ognl;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.apache.camel.spi.Language;
+import org.apache.camel.spi.ScriptingLanguage;
+import org.apache.camel.test.junit5.CamelTestSupport;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class OgnlScriptingLanguageTest extends CamelTestSupport {
+
+ @Test
+ public void testScripting() throws Exception {
+ Language lan = context.resolveLanguage("ognl");
+ Assertions.assertTrue(lan instanceof ScriptingLanguage);
+
+ ScriptingLanguage slan = (ScriptingLanguage) lan;
+ int num = slan.evaluate("2 * 3", null, int.class);
+ Assertions.assertEquals(6, num);
+
+ MyUser user = new MyUser();
+ user.setAge(33);
+ user.setName("Scott");
+ Map<String, Object> bindings = new LinkedHashMap<>();
+ bindings.put("user", user);
+ String out = slan.evaluate("resource:classpath:myuser.txt", bindings, String.class);
+ Assertions.assertEquals("Hello Scott you are 33 years old", out);
+ }
+
+}
diff --git a/components/camel-ognl/src/test/resources/myuser.txt b/components/camel-ognl/src/test/resources/myuser.txt
new file mode 100644
index 0000000..a43df2f
--- /dev/null
+++ b/components/camel-ognl/src/test/resources/myuser.txt
@@ -0,0 +1 @@
+"Hello " + user.name + " you are " + user.age + " years old"
\ No newline at end of file