AptResourceLoader.java

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package com.salesforce.apt.graph.model.storage.apt;

import java.util.ArrayList;
import java.util.List;

import javax.lang.model.element.ElementKind;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.util.Elements;

import com.salesforce.apt.graph.model.storage.Resource;
import com.salesforce.apt.graph.model.storage.ResourceLoader;
import com.salesforce.apt.graph.model.storage.classpath.FileStore;

public class AptResourceLoader implements ResourceLoader {

  protected static final String FIELD_NAME = "__DATA_FIELD";
  
  private final Elements elements;
  
  public AptResourceLoader(Elements elements) {
    this.elements = elements;
  }
  
  @Override
  public List<Resource> getEntries(String name) {
    List<Resource> resources = new ArrayList<>();
    String location = name.replace('$', '.') + "_" + FileStore.STANDARD.getPath();
    TypeElement element = elements.getTypeElement(location);
    if (element != null) {
      VariableElement dataField = (VariableElement) element.getEnclosedElements().stream()
          .filter(e -> FIELD_NAME.equals(e.getSimpleName().toString())
              && e.getKind() == ElementKind.FIELD).findFirst().orElse(null);
      String data = (String) dataField.getConstantValue();
      resources.add(new StringResource(location, data));
    }
    return resources;
  }

}