How to use

JobGraphGenerator$TaskInChain

in

org.apache.flink.optimizer.plantranslate

  vertex = null;
  config = new TaskConfig(new Configuration());
  this.chainedTasks.put(node, new TaskInChain(node, ds.getPushChainDriverClass(), config, taskName));
} else {

TaskConfig t = new TaskConfig(tic.getContainingVertex().getConfiguration());
t.addChainedTask(tic.getChainedTask(), tic.getTaskConfig(), tic.getTaskName());

PlanNode planNode = next.getPlanNode();
JobVertex vertex = next.getContainingVertex();

JobVertex container = chainedTask.getContainingVertex();
  if (container == null) {
    container = this.chainedTasks.get(sourceNode).getContainingVertex();
    if (container == null) {
      throw new IllegalStateException("Bug: Chained task predecessor has not been assigned its containing vertex.");
  chainedTask.setContainingVertex(container);
chainedTask.getTaskConfig().setInputSerializer(inConn.getSerializer(), 0);
  container.setName(containerTaskName + " -> " + chainedTask.getTaskName());
} else {
  container.setName("CHAIN " + containerTaskName + " -> " + chainedTask.getTaskName());

JobVertex container = chainedTask.getContainingVertex();
  if (container == null) {
    container = this.chainedTasks.get(sourceNode).getContainingVertex();
    if (container == null) {
      throw new IllegalStateException("Bug: Chained task predecessor has not been assigned its containing vertex.");
  chainedTask.setContainingVertex(container);
chainedTask.getTaskConfig().setInputSerializer(inConn.getSerializer(), 0);
  container.setName(containerTaskName + " -> " + chainedTask.getTaskName());
} else {
  container.setName("CHAIN " + containerTaskName + " -> " + chainedTask.getTaskName());

JobVertex container = chainedTask.getContainingVertex();
  if (container == null) {
    container = this.chainedTasks.get(sourceNode).getContainingVertex();
    if (container == null) {
      throw new IllegalStateException("Bug: Chained task predecessor has not been assigned its containing vertex.");
  chainedTask.setContainingVertex(container);
chainedTask.getTaskConfig().setInputSerializer(inConn.getSerializer(), 0);
  container.setName(containerTaskName + " -> " + chainedTask.getTaskName());
} else {
  container.setName("CHAIN " + containerTaskName + " -> " + chainedTask.getTaskName());

if ((chainedTask = this.chainedTasks.get(sourceNode)) != null) {
  if (chainedTask.getContainingVertex() == null) {
    throw new IllegalStateException("Bug: Chained task has not been assigned its containing vertex when connecting.");
  sourceVertex = chainedTask.getContainingVertex();
  sourceVertexConfig = chainedTask.getTaskConfig();
} else if ((iteration = this.iterations.get(sourceNode)) != null) {

if ((chainedTask = this.chainedTasks.get(sourceNode)) != null) {
  if (chainedTask.getContainingVertex() == null) {
    throw new IllegalStateException("Bug: Chained task has not been assigned its containing vertex when connecting.");
  sourceVertex = chainedTask.getContainingVertex();
  sourceVertexConfig = chainedTask.getTaskConfig();
} else if ((iteration = this.iterations.get(sourceNode)) != null) {

JobVertex container = chainedTask.getContainingVertex();
  if (container == null) {
    container = this.chainedTasks.get(sourceNode).getContainingVertex();
    if (container == null) {
      throw new IllegalStateException("Bug: Chained task predecessor has not been assigned its containing vertex.");
  chainedTask.setContainingVertex(container);
chainedTask.getTaskConfig().setInputSerializer(inConn.getSerializer(), 0);
  container.setName(containerTaskName + " -> " + chainedTask.getTaskName());
} else {
  container.setName("CHAIN " + containerTaskName + " -> " + chainedTask.getTaskName());

    throw new CompilerException("Bug: Next workset node not found as vertex or chained task.");
  nextWorksetVertex = taskInChain.getContainingVertex();
  worksetTailConfig = taskInChain.getTaskConfig();
} else {
  worksetTailConfig = new TaskConfig(nextWorksetVertex.getConfiguration());
    throw new CompilerException("Bug: Solution Set Delta not found as vertex or chained task.");
  solutionDeltaVertex = taskInChain.getContainingVertex();
  solutionDeltaConfig = taskInChain.getTaskConfig();
} else {
  solutionDeltaConfig = new TaskConfig(solutionDeltaVertex.getConfiguration());

    throw new CompilerException("Bug: Next workset node not found as vertex or chained task.");
  nextWorksetVertex = taskInChain.getContainingVertex();
  worksetTailConfig = taskInChain.getTaskConfig();
} else {
  worksetTailConfig = new TaskConfig(nextWorksetVertex.getConfiguration());
    throw new CompilerException("Bug: Solution Set Delta not found as vertex or chained task.");
  solutionDeltaVertex = taskInChain.getContainingVertex();
  solutionDeltaConfig = taskInChain.getTaskConfig();
} else {
  solutionDeltaConfig = new TaskConfig(solutionDeltaVertex.getConfiguration());

if ((chainedTask = this.chainedTasks.get(sourceNode)) != null) {
  if (chainedTask.getContainingVertex() == null) {
    throw new IllegalStateException("Bug: Chained task has not been assigned its containing vertex when connecting.");
  sourceVertex = chainedTask.getContainingVertex();
  sourceVertexConfig = chainedTask.getTaskConfig();
} else if ((iteration = this.iterations.get(sourceNode)) != null) {

    throw new CompilerException("Bug: Next workset node not found as vertex or chained task.");
  nextWorksetVertex = taskInChain.getContainingVertex();
  worksetTailConfig = taskInChain.getTaskConfig();
} else {
  worksetTailConfig = new TaskConfig(nextWorksetVertex.getConfiguration());
    throw new CompilerException("Bug: Solution Set Delta not found as vertex or chained task.");
  solutionDeltaVertex = taskInChain.getContainingVertex();
  solutionDeltaConfig = taskInChain.getTaskConfig();
} else {
  solutionDeltaConfig = new TaskConfig(solutionDeltaVertex.getConfiguration());

if ((chainedTask = this.chainedTasks.get(sourceNode)) != null) {
  if (chainedTask.getContainingVertex() == null) {
    throw new IllegalStateException("Bug: Chained task has not been assigned its containing vertex when connecting.");
  sourceVertex = chainedTask.getContainingVertex();
  sourceVertexConfig = chainedTask.getTaskConfig();
} else if ((iteration = this.iterations.get(sourceNode)) != null) {

    throw new CompilerException("Bug: Tail of step function not found as vertex or chained task.");
  rootOfStepFunctionVertex = taskInChain.getContainingVertex();
  tailConfig = taskInChain.getTaskConfig();
} else {
  tailConfig = new TaskConfig(rootOfStepFunctionVertex.getConfiguration());
      throw new CompilerException("Bug: Tail of termination criterion not found as vertex or chained task.");
    rootOfTerminationCriterionVertex = taskInChain.getContainingVertex();
    tailConfigOfTerminationCriterion = taskInChain.getTaskConfig();
  } else {
    tailConfigOfTerminationCriterion = new TaskConfig(rootOfTerminationCriterionVertex.getConfiguration());

    throw new CompilerException("Bug: Tail of step function not found as vertex or chained task.");
  rootOfStepFunctionVertex = taskInChain.getContainingVertex();
  tailConfig = taskInChain.getTaskConfig();
} else {
  tailConfig = new TaskConfig(rootOfStepFunctionVertex.getConfiguration());
      throw new CompilerException("Bug: Tail of termination criterion not found as vertex or chained task.");
    rootOfTerminationCriterionVertex = taskInChain.getContainingVertex();
    tailConfigOfTerminationCriterion = taskInChain.getTaskConfig();
  } else {
    tailConfigOfTerminationCriterion = new TaskConfig(rootOfTerminationCriterionVertex.getConfiguration());

    throw new CompilerException("Bug: Next workset node not found as vertex or chained task.");
  nextWorksetVertex = taskInChain.getContainingVertex();
  worksetTailConfig = taskInChain.getTaskConfig();
} else {
  worksetTailConfig = new TaskConfig(nextWorksetVertex.getConfiguration());
    throw new CompilerException("Bug: Solution Set Delta not found as vertex or chained task.");
  solutionDeltaVertex = taskInChain.getContainingVertex();
  solutionDeltaConfig = taskInChain.getTaskConfig();
} else {
  solutionDeltaConfig = new TaskConfig(solutionDeltaVertex.getConfiguration());

PlanNode planNode = next.getPlanNode();
JobVertex vertex = next.getContainingVertex();

PlanNode planNode = next.getPlanNode();
JobVertex vertex = next.getContainingVertex();

    throw new CompilerException("Bug: Tail of step function not found as vertex or chained task.");
  rootOfStepFunctionVertex = taskInChain.getContainingVertex();
  tailConfig = taskInChain.getTaskConfig();
} else {
  tailConfig = new TaskConfig(rootOfStepFunctionVertex.getConfiguration());
      throw new CompilerException("Bug: Tail of termination criterion not found as vertex or chained task.");
    rootOfTerminationCriterionVertex = taskInChain.getContainingVertex();
    tailConfigOfTerminationCriterion = taskInChain.getTaskConfig();
  } else {
    tailConfigOfTerminationCriterion = new TaskConfig(rootOfTerminationCriterionVertex.getConfiguration());