Spring/spring-framework
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Fix compilation of SpEL Indexer nodes involving map references

Browse Source 
There is special handling for SpEL expressions involving a map
and an unquoted string literal key (e.g. mymap[key1]). SpEL does
not require key1 to be quoted. This special handling which is done
in Indexer getValueRef() was not being also done in the Indexer
generateCode() method that compiles the expression. Also fixed
a problem where the key was not being compiled in a new
sub scope. Without the new scope the key expression was failing
to reload the relevant context object when it needed it.

Issue: SPR-12045
This commit is contained in:
Andy Clement
2014-07-30 12:40:57 -07:00
parent 135a3ff3d8
commit 813cc3b339
2 changed files with 102 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
spring-expression/src/test/java/org/springframework/expression/spel/SpelCompilationCoverageTests.java
View File

@@ -37,6 +37,7 @@ import org.springframework.expression.spel.ast.SpelNodeImpl;
import org.springframework.expression.spel.ast.Ternary;
import org.springframework.expression.spel.standard.SpelCompiler;
import org.springframework.expression.spel.standard.SpelExpression;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import static org.junit.Assert.*;
@@ -2468,8 +2469,69 @@ public class SpelCompilationCoverageTests extends AbstractExpressionTests {
assertTrue(expression.getValue(new GenericMessageTestHelper2<Integer>(6),Boolean.TYPE));
}
@Test
public void indexerMapAccessor_12045() throws Exception {
SpelParserConfiguration spc = new SpelParserConfiguration(SpelCompilerMode.IMMEDIATE,this.getClass().getClassLoader());
SpelExpressionParser sep = new SpelExpressionParser(spc);
expression=sep.parseExpression("headers[command]");
MyMessage root = new MyMessage();
assertEquals("wibble",expression.getValue(root));
// This next call was failing because the isCompilable check in Indexer did not check on the key being compilable
// (and also generateCode in the Indexer was missing the optimization that it didn't need necessarily need to call
// generateCode for that accessor)
assertEquals("wibble",expression.getValue(root));
assertCanCompile(expression);
// What about a map key that is an expression - ensure the getKey() is evaluated in the right scope
expression=sep.parseExpression("headers[getKey()]");
assertEquals("wobble",expression.getValue(root));
assertEquals("wobble",expression.getValue(root));
expression=sep.parseExpression("list[getKey2()]");
assertEquals("wobble",expression.getValue(root));
assertEquals("wobble",expression.getValue(root));
expression = sep.parseExpression("ia[getKey2()]");
assertEquals(3,expression.getValue(root));
assertEquals(3,expression.getValue(root));
}
// ---
public static interface Message<T> {
MessageHeaders getHeaders();
@SuppressWarnings("rawtypes")
List getList();
int[] getIa();
}
public static class MyMessage implements Message<String> {
public MessageHeaders getHeaders() {
MessageHeaders mh = new MessageHeaders();
mh.put("command", "wibble");
mh.put("command2", "wobble");
return mh;
}
public int[] getIa() { return new int[]{5,3}; }
@SuppressWarnings({ "rawtypes", "unchecked" })
public List getList() {
List l = new ArrayList();
l.add("wibble");
l.add("wobble");
return l;
}
public String getKey() {
return "command2";
}
public int getKey2() {
return 1;
}
}
public static class MessageHeaders extends HashMap<String,Object> { }
public static class GenericMessageTestHelper<T> {
private T payload;