Github user jjmeyer0 commented on the issue:
https://github.com/apache/metron/pull/814
Also, I don't think there is an issue with the map function directly. It's
actually an issue with the logical_expression `var1` and using/not using a
`default` branch. It seems like the stack isn't properly being managed. For
example things are being pushed (eg. when a logical_expr is just `var1`) when
they shouldn't and popped when they shouldn't be (eg. when there is no
default?). I haven't pin pointed it directly yet, but I hope this helps
somewhat. Below are a few example tests that I have created.
```java
// Here there is a null on the stack
@Test
@SuppressWarnings("unchecked")
public void test1FailsWithMoreOnStack() {
Assert.assertEquals("a", run("match{ foo : 'a' }",
new HashMap() {{
put("foo", true);
}}));
}
```
// Here it's an empty stack when we expect 'a' i believe.
```java
@Test
@SuppressWarnings("unchecked")
public void test1FailsEmptyStack() {
Assert.assertEquals("a", run("match{ foo == true : 'a' }",
new HashMap() {{
put("foo", true);
}}));
}
```
```java
// This is *not* properly handled
@Test
@SuppressWarnings("unchecked")
public void test1Passes() {
Assert.assertEquals("a", run("match{ foo : 'a', default: 'b' }",
new HashMap() {{
put("foo", true);
}}));
}
```
```java
// This is properly handled
@Test
@SuppressWarnings("unchecked")
public void test1Passes() {
Assert.assertEquals("a", run("match{ foo == true : 'a', default: 'b'
}",
new HashMap() {{
put("foo", true);
}}));
}
```
```java
// Example where map works
@Test
@SuppressWarnings("unchecked")
public void workingMatchWithMap() {
Assert.assertEquals(Arrays.asList("OK", "HAHA"), run("match{ foo > 100
: THROW('oops'), foo > 200 : THROW('oh no'), foo >= 50 : MAP(['ok', 'haha'],
(a) -> TO_UPPER(a)), default: 'a' }",
new HashMap() {{
put("foo", 50);
}}));
}
```
---
