Question

我正在使用OpenNTF Domino API在XPage应用程序中工作，以探索Graph数据建模功能。例如，我采用了IBM Domino附带的Teamroom。

我已经定义了一个将响应文档迁移到Grap db的方法，但是我收到了错误消息：无法对非静态方法进行静态引用

以下是该方法的样子：

private void migrateResponses(DFramedTransactionalGraph<DGraph> profilesGraph) {
    try {
        Database db = Factory.getSession().getCurrentDatabase();
        View view = db.getView("responsesOnly");
        DocumentCollection col = view.getAllDocuments();
        System.out.println("number of docs found " + col.getCount());

    for (Document response : col) {

        System.out.println("form:" + response.getFormName());
        System.out.println("id:" + response.getUniversalID());

        org.openntf.domino.ext.Document parent = response.getParentDocument();

        if (null == parent.getParentDocument()){
            //has no parent document so this parent document is a MainTopic/Post
            Post post = profilesGraph.addVertex(parent.getMetaversalID(), Post.class);
            Response vertexResponse = profilesGraph.addVertex(response.getUniversalID(), Response.class);
            vertexResponse.setSubject(response.getItemValueString("Subject"));
            Post.addResponse(vertexResponse);
        }
    }
    profilesGraph.commit();
} catch (Throwable t) {
    XspOpenLogUtil.logError(t);
}
}

错误发生在行中：

Post.addResponse(vertexResponse);

这是我的Post类的样子：

package com.wordpress.quintessens.graph.teamroom;

import org.openntf.domino.graph2.annotations.AdjacencyUnique;
import org.openntf.domino.graph2.builtin.DVertexFrame;

import com.tinkerpop.blueprints.Direction;
import com.tinkerpop.frames.Property;
import com.tinkerpop.frames.modules.typedgraph.TypeValue;

@TypeValue("post")
public interface Post extends DVertexFrame {

    @Property("$$Key")
    public String getKey();

    @Property("subject")
    public String getSubject();

    @Property("subject")
    public void setSubject(String n);

    // real edges!

    @AdjacencyUnique(label = "hasWritten", direction = Direction.OUT)
    public Iterable<Profile> getAuthors();


    @AdjacencyUnique(label = "hasReaction", direction = Direction.IN)
    public void addResponse(Response response);

    @AdjacencyUnique(label = "hasReaction", direction = Direction.IN)
    public void removeResponse(Response response);

    @AdjacencyUnique(label = "hasReaction", direction = Direction.IN)
    public Iterable<Response> getResponses();
}

您是否有建议如何调整我的代码以使其正常工作？

Answer 1

除非OpenNTF或TinkerPop使用提供的注释进行某种魔术，否则您尝试在接口上调用非静态方法。你确定你不想改变：

Post.addResponse(vertexResponse);

到

post.addResponse(vertexResponse);

尝试将IBM Notes数据迁移到Graph db中

1 个答案: