Examples with IFn clojure.lang.IFn used on opensource projects

Example 11 with IFn

use of clojure.lang.IFn in project jstorm by alibaba.

the class ClojureSpout method open.

@Override
public void open(final Map conf, final TopologyContext context, final SpoutOutputCollector collector) {
    IFn hof = Utils.loadClojureFn(_fnSpec.get(0), _fnSpec.get(1));
    try {
        IFn preparer = (IFn) hof.applyTo(RT.seq(_params));
        final Map<Keyword, Object> collectorMap = new PersistentArrayMap(new Object[] { Keyword.intern(Symbol.create("output-collector")), collector, Keyword.intern(Symbol.create("context")), context });
        List<Object> args = new ArrayList<Object>() {

            {
                add(conf);
                add(context);
                add(collectorMap);
            }
        };
        _spout = (ISpout) preparer.applyTo(RT.seq(args));
        // this is kind of unnecessary for clojure
        try {
            _spout.open(conf, context, collector);
        } catch (AbstractMethodError ame) {
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 12 with IFn

use of clojure.lang.IFn in project storm by apache.

the class ClojureBolt method prepare.

@Override
public void prepare(final Map stormConf, final TopologyContext context, final OutputCollector collector) {
    IFn hof = Utils.loadClojureFn(_fnSpec.get(0), _fnSpec.get(1));
    try {
        IFn preparer = (IFn) hof.applyTo(RT.seq(_params));
        final Map<Keyword, Object> collectorMap = new PersistentArrayMap(new Object[] { Keyword.intern(Symbol.create("output-collector")), collector, Keyword.intern(Symbol.create("context")), context });
        List<Object> args = new ArrayList<Object>() {

            {
                add(stormConf);
                add(context);
                add(collectorMap);
            }
        };
        _bolt = (IBolt) preparer.applyTo(RT.seq(args));
        //this is kind of unnecessary for clojure
        try {
            _bolt.prepare(stormConf, context, collector);
        } catch (AbstractMethodError ame) {
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 13 with IFn

use of clojure.lang.IFn in project storm by apache.

the class ClojureSpout method open.

@Override
public void open(final Map conf, final TopologyContext context, final SpoutOutputCollector collector) {
    IFn hof = Utils.loadClojureFn(_fnSpec.get(0), _fnSpec.get(1));
    try {
        IFn preparer = (IFn) hof.applyTo(RT.seq(_params));
        final Map<Keyword, Object> collectorMap = new PersistentArrayMap(new Object[] { Keyword.intern(Symbol.create("output-collector")), collector, Keyword.intern(Symbol.create("context")), context });
        List<Object> args = new ArrayList<Object>() {

            {
                add(conf);
                add(context);
                add(collectorMap);
            }
        };
        _spout = (ISpout) preparer.applyTo(RT.seq(args));
        //this is kind of unnecessary for clojure
        try {
            _spout.open(conf, context, collector);
        } catch (AbstractMethodError ame) {
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 14 with IFn

use of clojure.lang.IFn in project enumerable by hraberg.

the class ClojureTest method convertFnToIFnKeepsDefaultValues.

@Test
public void convertFnToIFnKeepsDefaultValues() throws Exception {
    IFn fn = toIFn(Lambda.λ(s = "world", s.toUpperCase()));
    assertEquals("WORLD", fn.invoke());
}

Example 15 with IFn

use of clojure.lang.IFn in project enumerable by hraberg.

the class ClojureTest method interactingWithGroovy.

@Test
public void interactingWithGroovy() throws Exception {
    ScriptEngine groovy = GroovyTest.getGroovyEngine();
    Closure<?> closure = (Closure<?>) groovy.eval("{ n, m -> n * m }");
    IFn times = toIFn(LambdaGroovy.toFn2(closure));
    assertEquals(6, times.invoke(2, 3));
    defn("times-groovy", times);
    assertEquals(120L, clj.eval("(reduce times-groovy 1 [1, 2, 3, 4, 5])"));
}