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https://issues.apache.org/jira/browse/JEXL-151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14642859#comment-14642859
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Henri Biestro edited comment on JEXL-151 at 7/28/15 6:46 AM:
-
After JEXL-170 has been implemented it is straight-forward to implement the
required functionality by extending JexlArithmetic. If you feel it has any
sence to others you may include the code below in base implementaion:
{code}
public CollectionObject selfAdd(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection?) {
c.addAll((Collection?)x);
} else if (x.getClass().isArray()) {
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
c.add(key);
}
} else {
c.add(x);
}
}
return c;
}
public CollectionObject selfSubtract(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection) {
c.removeAll((Collection?)x);
} else if (x.getClass().isArray()) {
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
c.remove(key);
}
} else {
c.remove(x);
}
}
return c;
}
public CollectionObject selfMultiply(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection?) {
c.retainAll((Collection?) x);
} else if (x.getClass().isArray()) {
ListObject list = new ArrayListObject();
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
list.add(key);
}
c.retainAll(list);
} else {
ListObject list = new ArrayListObject();
list.add(x);
c.retainAll(list);
}
}
return c;
}
{code}
was (Author: dmitri_blinov):
After JEXL-170 has been implemented it is straight-forward to implement the
required functionality by extending JexlArithmetic. If you feel it has any
sence to others you may include the code below in base implementaion:
{{{quote}{noformat}
public CollectionObject selfAdd(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection?) {
c.addAll((Collection?)x);
} else if (x.getClass().isArray()) {
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
c.add(key);
}
} else {
c.add(x);
}
}
return c;
}
public CollectionObject selfSubtract(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection) {
c.removeAll((Collection?)x);
} else if (x.getClass().isArray()) {
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
c.remove(key);
}
} else {
c.remove(x);
}
}
return c;
}
public CollectionObject selfMultiply(CollectionObject c, Object x) {
if (x != null c != null) {
if (x instanceof Collection?) {
c.retainAll((Collection?) x);
} else if (x.getClass().isArray()) {
ListObject list = new ArrayListObject();
for (int i = 0; i Array.getLength(x); i++) {
Object key = Array.get(x, i);
list.add(key);
}
c.retainAll(list);
} else {
ListObject list = new ArrayListObject();
list.add(x);
c.retainAll(list);
}
}
return c;
}
{noformat}{quote}}}
operators to manipulate j.u.Collection
--
Key: JEXL-151
URL: https://issues.apache.org/jira/browse/JEXL-151
Project: Commons JEXL
Issue Type: New Feature
Affects Versions: 3.0
Reporter: Dmitri Blinov
Priority: Minor
Fix For: Later
New operators to add or remove collection items to/from Collection. Operators
can be named as += and -= respectively, or any other way. Operator += can be
mapped to Collection.addAll(Collection c) if right argument is Collection or
to Collection.add(Object o) otherwise. Operator -= can be mapped to
Collection.removeAll(Collection c) if right argument is Collection or to
Collection.remove(Object o) otherwise. Extend operators =~ (!~) to support
CollectionA =~ CollectionB usage, in which case it should map to
B.containsAll(A) operation.
