/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed 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.springframework.expression.spel;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.junit.Test;
import org.springframework.expression.AccessException;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.Expression;
import org.springframework.expression.PropertyAccessor;
import org.springframework.expression.TypedValue;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import static org.junit.Assert.*;
@SuppressWarnings("rawtypes")
public class IndexingTests {
@Test
public void indexIntoGenericPropertyContainingMap() {
Map<String, String> property = new HashMap<>();
property.put("foo", "bar");
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.HashMap<?, ?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
assertEquals(property, expression.getValue(this, Map.class));
expression = parser.parseExpression("property['foo']");
assertEquals("bar", expression.getValue(this));
}
@FieldAnnotation
public Object property;
@Test
public void indexIntoGenericPropertyContainingMapObject() {
Map<String, Map<String, String>> property = new HashMap<>();
Map<String, String> map = new HashMap<>();
map.put("foo", "bar");
property.put("property", map);
SpelExpressionParser parser = new SpelExpressionParser();
StandardEvaluationContext context = new StandardEvaluationContext();
context.addPropertyAccessor(new MapAccessor());
context.setRootObject(property);
Expression expression = parser.parseExpression("property");
assertEquals("java.util.HashMap<?, ?>", expression.getValueTypeDescriptor(context).toString());
assertEquals(map, expression.getValue(context));
assertEquals(map, expression.getValue(context, Map.class));
expression = parser.parseExpression("property['foo']");
assertEquals("bar", expression.getValue(context));
}
public static class MapAccessor implements PropertyAccessor {
@Override
public boolean canRead(EvaluationContext context, Object target, String name) throws AccessException {
return (((Map<?, ?>) target).containsKey(name));
}
@Override
public TypedValue read(EvaluationContext context, Object target, String name) throws AccessException {
return new TypedValue(((Map<?, ?>) target).get(name));
}
@Override
public boolean canWrite(EvaluationContext context, Object target, String name) throws AccessException {
return true;
}
@Override
@SuppressWarnings("unchecked")
public void write(EvaluationContext context, Object target, String name, Object newValue)
throws AccessException {
((Map) target).put(name, newValue);
}
@Override
public Class<?>[] getSpecificTargetClasses() {
return new Class[] { Map.class };
}
}
@Test
public void setGenericPropertyContainingMap() {
Map<String, String> property = new HashMap<>();
property.put("foo", "bar");
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.HashMap<?, ?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property['foo']");
assertEquals("bar", expression.getValue(this));
expression.setValue(this, "baz");
assertEquals("baz", expression.getValue(this));
}
@Test
public void setPropertyContainingMap() {
Map<Integer, Integer> property = new HashMap<>();
property.put(9, 3);
this.parameterizedMap = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("parameterizedMap");
assertEquals("java.util.HashMap<java.lang.Integer, java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("parameterizedMap['9']");
assertEquals(3, expression.getValue(this));
expression.setValue(this, "37");
assertEquals(37, expression.getValue(this));
}
public Map<Integer, Integer> parameterizedMap;
@Test
public void setPropertyContainingMapAutoGrow() {
SpelExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, false));
Expression expression = parser.parseExpression("parameterizedMap");
assertEquals("java.util.Map<java.lang.Integer, java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("parameterizedMap['9']");
assertEquals(null, expression.getValue(this));
expression.setValue(this, "37");
assertEquals(37, expression.getValue(this));
}
@Test
public void indexIntoGenericPropertyContainingList() {
List<String> property = new ArrayList<>();
property.add("bar");
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
assertEquals("bar", expression.getValue(this));
}
@Test
public void setGenericPropertyContainingList() {
List<Integer> property = new ArrayList<>();
property.add(3);
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
assertEquals(3, expression.getValue(this));
expression.setValue(this, "4");
assertEquals("4", expression.getValue(this));
}
@Test
public void setGenericPropertyContainingListAutogrow() {
List<Integer> property = new ArrayList<>();
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
try {
expression.setValue(this, "4");
}
catch (EvaluationException ex) {
assertTrue(ex.getMessage().startsWith("EL1053E"));
}
}
@Test
public void indexIntoPropertyContainingList() {
List<Integer> property = new ArrayList<>();
property.add(3);
this.parameterizedList = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("parameterizedList");
assertEquals("java.util.ArrayList<java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("parameterizedList[0]");
assertEquals(3, expression.getValue(this));
}
public List<Integer> parameterizedList;
@Test
public void indexIntoPropertyContainingListOfList() {
List<List<Integer>> property = new ArrayList<>();
property.add(Arrays.asList(3));
this.parameterizedListOfList = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("parameterizedListOfList[0]");
assertEquals("java.util.Arrays$ArrayList<java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property.get(0), expression.getValue(this));
expression = parser.parseExpression("parameterizedListOfList[0][0]");
assertEquals(3, expression.getValue(this));
}
public List<List<Integer>> parameterizedListOfList;
@Test
public void setPropertyContainingList() {
List<Integer> property = new ArrayList<>();
property.add(3);
this.parameterizedList = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("parameterizedList");
assertEquals("java.util.ArrayList<java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("parameterizedList[0]");
assertEquals(3, expression.getValue(this));
expression.setValue(this, "4");
assertEquals(4, expression.getValue(this));
}
@Test
public void indexIntoGenericPropertyContainingNullList() {
SpelParserConfiguration configuration = new SpelParserConfiguration(true, true);
SpelExpressionParser parser = new SpelExpressionParser(configuration);
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.lang.Object", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
try {
assertEquals("bar", expression.getValue(this));
}
catch (EvaluationException ex) {
assertTrue(ex.getMessage().startsWith("EL1027E"));
}
}
@Test
public void indexIntoGenericPropertyContainingGrowingList() {
List<String> property = new ArrayList<>();
this.property = property;
SpelParserConfiguration configuration = new SpelParserConfiguration(true, true);
SpelExpressionParser parser = new SpelExpressionParser(configuration);
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
try {
assertEquals("bar", expression.getValue(this));
}
catch (EvaluationException ex) {
assertTrue(ex.getMessage().startsWith("EL1053E"));
}
}
@Test
public void indexIntoGenericPropertyContainingGrowingList2() {
List<String> property2 = new ArrayList<>();
this.property2 = property2;
SpelParserConfiguration configuration = new SpelParserConfiguration(true, true);
SpelExpressionParser parser = new SpelExpressionParser(configuration);
Expression expression = parser.parseExpression("property2");
assertEquals("java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals(property2, expression.getValue(this));
expression = parser.parseExpression("property2[0]");
try {
assertEquals("bar", expression.getValue(this));
}
catch (EvaluationException ex) {
assertTrue(ex.getMessage().startsWith("EL1053E"));
}
}
public List property2;
@Test
public void indexIntoGenericPropertyContainingArray() {
String[] property = new String[] { "bar" };
this.property = property;
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("property");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.lang.String[]", expression.getValueTypeDescriptor(this).toString());
assertEquals(property, expression.getValue(this));
expression = parser.parseExpression("property[0]");
assertEquals("bar", expression.getValue(this));
}
@Test
public void emptyList() {
listOfScalarNotGeneric = new ArrayList();
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("listOfScalarNotGeneric");
assertEquals("java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals("", expression.getValue(this, String.class));
}
@SuppressWarnings("unchecked")
@Test
public void resolveCollectionElementType() {
listNotGeneric = new ArrayList(2);
listNotGeneric.add(5);
listNotGeneric.add(6);
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("listNotGeneric");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.ArrayList<?>", expression.getValueTypeDescriptor(this).toString());
assertEquals("5,6", expression.getValue(this, String.class));
}
@Test
public void resolveCollectionElementTypeNull() {
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("listNotGeneric");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.List<?>", expression.getValueTypeDescriptor(this).toString());
}
@FieldAnnotation
public List listNotGeneric;
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
public @interface FieldAnnotation {
}
@SuppressWarnings("unchecked")
@Test
public void resolveMapKeyValueTypes() {
mapNotGeneric = new HashMap();
mapNotGeneric.put("baseAmount", 3.11);
mapNotGeneric.put("bonusAmount", 7.17);
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("mapNotGeneric");
assertEquals("@org.springframework.expression.spel.IndexingTests$FieldAnnotation java.util.HashMap<?, ?>", expression.getValueTypeDescriptor(this).toString());
}
@FieldAnnotation
public Map mapNotGeneric;
@SuppressWarnings("unchecked")
@Test
public void testListOfScalar() {
listOfScalarNotGeneric = new ArrayList(1);
listOfScalarNotGeneric.add("5");
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("listOfScalarNotGeneric[0]");
assertEquals(new Integer(5), expression.getValue(this, Integer.class));
}
public List listOfScalarNotGeneric;
@SuppressWarnings("unchecked")
@Test
public void testListsOfMap() {
listOfMapsNotGeneric = new ArrayList();
Map map = new HashMap();
map.put("fruit", "apple");
listOfMapsNotGeneric.add(map);
SpelExpressionParser parser = new SpelExpressionParser();
Expression expression = parser.parseExpression("listOfMapsNotGeneric[0]['fruit']");
assertEquals("apple", expression.getValue(this, String.class));
}
public List listOfMapsNotGeneric;
}