Question

对于使用弹簧数据neo4j的图形，我有以下定义。

更新关系时，更改将传播到关系的节点（@StartNode和@EndNode）。我如何避免这种行为？

我只想更新@RelationshipEntity，而不要更新关系的节点。

谢谢

@Data
public class Graph {
    @Id
    @GeneratedValue
    private Long id;

    private String name;

    @Relationship(type = "MADE_OF")
    private List<Relationship> relationships = new ArrayList<>();
}


@Data
@RelationshipEntity(type = "MADE_OF")
public final class Relationship {    
    @Id
    @GeneratedValue
    private Long id;

    @StartNode
    private Node source;

    @EndNode
    private Node target;
}

@Data
public class Node {
    @Id
    @GeneratedValue
    private Long id;
    private String name;
    private String description;
}

Answer 1

如果使用[batch_size, height, num_channels, width]，则不能不更新关系的开始和结束节点而更新关系。即使您指定了input_data = tf.Variable(tf.random_normal([2,16,16,200], mean=10, stddev=10)) # compute mean over channels dimension using tf.reduce_mean mean = tf.reduce_mean(input_data, reduction_indices=[3], keep_dims=True) # transpose to [batch_size, height, num_channels, width] input_t = tf.transpose(input_data, [0,1,3,2]) # get the value of num_channels num_channels = input_t.get_shape().as_list()[2] # compute mean using tf.nn.avg_pool avg = tf.nn.avg_pool(value=input_t, ksize=[1, 1, num_channels, 1], strides=[1, 1, num_channels, 1], padding="SAME") # transpose back to original form input_tt = tf.transpose(avg, [0,1,3,2]) sess = tf. InteractiveSession() sess.run(tf.initialize_all_variables()) avg_value = input_tt.eval() print("Shape after avg_pool method: %s" % str(avg_value.shape)) # >>> (2, 16, 16, 1) mean_value = mean.eval() print("Shape after reduce_mean method: %s" % str(mean_value.shape)) # >>> (2, 16, 16, 1)之类的session.save(entity)。

如果您要持久保存的对象是deph，则持久保存意味着开始节点和结束节点也将持久保存。它来自session.save(entity, depth) lib中的RelationshipEntity

请考虑直接使用org.neo4j.ogm.context.EntityGraphMapper.map(Object, int)来更新您的关系属性。

neo4j-ogm-core

弹簧数据neo4j不会更新RelationshipEntity中的节点

1 个答案: