java - Returning a HashMap collection with simple property keys in QueryDsl -

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in querydsl, return simple map<string, object> collection. imagine there's simple way it. i've used qmap, returns keys qualified properties instead of simple properties.

so instead of items looking using qmap collection:

{     poolmaster.calculatevalue: "y"     poolmaster.downloadstats: "y"     poolmaster.maxplayervalue: 25     poolmaster.minplayervalue: 5     poolmaster.pickdeadline: 1430366400000     size(poolmaster.poolsequences): 1     poolmaster.year: 2015 }

i'd items this:

{     calculatevalue: "y"     downloadstats: "y"     maxplayervalue: 25     minplayervalue: 5     pickdeadline: 1430366400000     poolsequencescount: 1     year: 2015 }

this elaborate solution far, i'm hoping querydsl has built in.

public collection<map<string, object>> findall() {     return this.from(poolmaster)             .orderby(poolmaster.year.desc())             .list(                     map(                             poolmaster.year, poolmaster.pickdeadline, poolmaster.downloadstats,                             poolmaster.calculatevalue, poolmaster.minplayervalue, poolmaster.maxplayervalue,                             poolmaster.poolsequences.size()                     )             ).stream()             .map(tohashmap())             .collect(tolist()); }  public static function<map<expression<?>, ?>, map<string, object>> tohashmap() {     return expressionmap -> {         map<string, object> map = new hashmap<>();         (expression<?> key : expressionmap.keyset()) {             path path = null;             string suffix = "";              if(key instanceof numberoperation) {                 numberoperation op = (numberoperation) key;                  if(op.getoperator().getid().equals(ops.col_size.getid())) {                     suffix = "count";                 }                  path = (path) op.getarg(0);             }              if(key instanceof path) {                 path = (path) key;             }              if(path != null) {                 map.put(path.getmetadata().getname() + suffix, expressionmap.get(key));             }         }         return map;     }; }

i suggest use factoryexpression interface implement transformation. should more performant , compliant how transformations done in querydsl.

map transformations results available via qtuple , qmap. sources of these 2 classes should give direction on how create map transformation.


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