javax.json.stream.JsonCollectors Java Examples

The following examples show how to use javax.json.stream.JsonCollectors. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: JsonDemo.java    From Java-EE-8-and-Angular with MIT License 6 votes vote down vote up 
private void jsonStreamFilter() {
    JsonReader reader = Json.createReader(JsonDemo.class.getResourceAsStream("/sample_priority.json"));
    JsonArray jsonarray = reader.readArray();

    JsonArray result = jsonarray.getValuesAs(JsonObject.class)
            .stream()
            .filter(j -> "High".equals(j.getString("priority")))
            .collect(JsonCollectors.toJsonArray());
    System.out.println("Stream Filter: " + result);
}
Example #2
Source File: JsonDemo.java    From Java-EE-8-and-Angular with MIT License 5 votes vote down vote up 
private void jsonStreamGroup() {
    JsonReader reader = Json.createReader(JsonDemo.class.getResourceAsStream("/sample_priority.json"));
    JsonArray jsonarray = reader.readArray();

    JsonObject result = jsonarray.getValuesAs(JsonObject.class)
            .stream()
            .collect(JsonCollectors.groupingBy(
                    x -> ((JsonObject) x).getJsonString("priority")
                            .getString()
            ));
    System.out.println("Stream Group: " + result);

}
Example #3
Source File: BooksResource.java    From Architecting-Modern-Java-EE-Applications with MIT License 5 votes vote down vote up 
@GET
public JsonArray getBooks() {
    return bookStore.getBooks().stream()
            .map((Book book) -> {
                URI selfUri = uriInfo.getBaseUriBuilder()
                        .path(BooksResource.class)
                        .path(BooksResource.class, "getBook")
                        .build(book.getId());
                return entityBuilder.buildForBook(book, selfUri);
            })
            .collect(JsonCollectors.toJsonArray());
}
Example #4
Source File: PingsResource.java    From ping with Apache License 2.0 5 votes vote down vote up 
@GET
@Path("/system-properties")
public JsonObject systemProperties() {

    Properties properties = System.getProperties();
    Map<String, JsonValue> map = properties.entrySet().
            stream().
            collect(toMap(k -> k.toString(), v -> createValue(v.getValue().toString())));
    return map.entrySet().stream().collect(JsonCollectors.toJsonObject());
}
Example #5
Source File: PingsResource.java    From ping with Apache License 2.0 5 votes vote down vote up 
@GET
@Path("/environment-variables")
public JsonObject environmentVariables() {
    Map<String, JsonValue> environment
            = System.getenv().
                    entrySet().
                    stream().
                    collect(toMap(Map.Entry::getKey, v -> createValue(v.getValue())));
    return environment.entrySet().stream().collect(JsonCollectors.toJsonObject());
}
Example #6
Source File: PingsResource.java    From ping with Apache License 2.0 5 votes vote down vote up 
@GET
@Path("/system-properties")
public JsonObject systemProperties() {

    Properties properties = System.getProperties();
    Map<String, JsonValue> map = properties.entrySet().
            stream().
            collect(toMap(k -> k.toString(), v -> createValue(v.getValue().toString())));
    return map.entrySet().stream().collect(JsonCollectors.toJsonObject());
}
Example #7
Source File: PingsResource.java    From ping with Apache License 2.0 5 votes vote down vote up 
@GET
@Path("/environment-variables")
public JsonObject environmentVariables() {
    Map<String, JsonValue> environment
            = System.getenv().
                    entrySet().
                    stream().
                    collect(toMap(Map.Entry::getKey, v -> createValue(v.getValue())));
    return environment.entrySet().stream().collect(JsonCollectors.toJsonObject());
}
Example #8
Source File: Java8Integration.java    From Java-EE-8-Sampler with MIT License 4 votes vote down vote up 
public JsonArray filterJsonArrayToJsonArray() {
    JsonArray topics = jsonObject.getJsonArray("topics").stream()
            .filter(jsonValue -> ((JsonString) jsonValue).getString().startsWith("C"))
            .collect(JsonCollectors.toJsonArray());
    return topics;
}
Example #9
Source File: BooksResource.java    From Architecting-Modern-Java-EE-Applications with MIT License 4 votes vote down vote up 
@GET
public JsonArray getBooks() {
    return bookStore.getBooks().stream()
            .map(this::buildBookJson)
            .collect(JsonCollectors.toJsonArray());
}