Examples with ResultVisitor org.finos.legend.engine.plan.execution.result.ResultVisitor used on opensource projects

Example 1 with ResultVisitor

use of org.finos.legend.engine.plan.execution.result.ResultVisitor in project legend-engine by finos.

the class ExecutionNodeExecutor method visit.

@Override
public Result visit(PureExpressionPlatformExecutionNode pureExpressionPlatformExecutionNode) {
    if (!(pureExpressionPlatformExecutionNode.implementation instanceof JavaPlatformImplementation)) {
        throw new RuntimeException("Only Java implementations are currently supported, found: " + pureExpressionPlatformExecutionNode.implementation);
    }
    JavaPlatformImplementation javaPlatformImpl = (JavaPlatformImplementation) pureExpressionPlatformExecutionNode.implementation;
    String executionClassName = JavaHelper.getExecutionClassFullName(javaPlatformImpl);
    Class<?> clazz = ExecutionNodeJavaPlatformHelper.getClassToExecute(pureExpressionPlatformExecutionNode, executionClassName, this.executionState, this.profiles);
    if (Arrays.asList(clazz.getInterfaces()).contains(IPlatformPureExpressionExecutionNodeSerializeSpecifics.class)) {
        try {
            org.finos.legend.engine.plan.dependencies.store.platform.IPlatformPureExpressionExecutionNodeSerializeSpecifics nodeSpecifics = (org.finos.legend.engine.plan.dependencies.store.platform.IPlatformPureExpressionExecutionNodeSerializeSpecifics) clazz.newInstance();
            Result childResult = pureExpressionPlatformExecutionNode.executionNodes().getFirst().accept(new ExecutionNodeExecutor(profiles, executionState));
            IExecutionNodeContext context = new DefaultExecutionNodeContext(this.executionState, childResult);
            AppliedFunction f = (AppliedFunction) pureExpressionPlatformExecutionNode.pure;
            SerializationConfig config = f.parameters.size() == 3 ? (SerializationConfig) f.parameters.get(2) : null;
            return ExecutionNodeSerializerHelper.executeSerialize(nodeSpecifics, config, childResult, context);
        } catch (InstantiationException | IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }
    if (Arrays.asList(clazz.getInterfaces()).contains(IPlatformPureExpressionExecutionNodeGraphFetchUnionSpecifics.class)) {
        StreamingObjectResult<?> streamResult1 = (StreamingObjectResult) pureExpressionPlatformExecutionNode.executionNodes.get(0).accept(new ExecutionNodeExecutor(this.profiles, this.executionState));
        StreamingObjectResult<?> streamResult2 = (StreamingObjectResult) pureExpressionPlatformExecutionNode.executionNodes.get(1).accept(new ExecutionNodeExecutor(this.profiles, this.executionState));
        Result childResult = new Result("success") {

            @Override
            public <T> T accept(ResultVisitor<T> resultVisitor) {
                throw new RuntimeException("Not implemented");
            }

            @Override
            public void close() {
                streamResult1.close();
                streamResult2.close();
            }
        };
        return new StreamingObjectResult<>(Stream.concat(streamResult1.getObjectStream(), streamResult2.getObjectStream()), streamResult1.getResultBuilder(), childResult);
    }
    if (Arrays.asList(clazz.getInterfaces()).contains(IPlatformPureExpressionExecutionNodeGraphFetchMergeSpecifics.class)) {
        StreamingObjectResult<?> streamResult = (StreamingObjectResult) pureExpressionPlatformExecutionNode.executionNodes.get(0).accept(new ExecutionNodeExecutor(this.profiles, this.executionState));
        return streamResult;
    } else {
        return ExecutionNodeJavaPlatformHelper.executeJavaImplementation(pureExpressionPlatformExecutionNode, DefaultExecutionNodeContext.factory(), this.profiles, this.executionState);
    }
}