同意,我们缺少将在即将发布的版本中改进的文档。
如果您对 spring data elasticsearch stackoverflow 有任何疑问,可能不是获得答案的最佳方式(因为我们不会收到新线程的通知),我们有单独的谷歌组用于问题/查询https://groups.google.com/forum/ #!forum/spring-data-elasticsearch-devs
在不知道您究竟想用上述实体实现什么的情况下,我可以给您一个示例父子实体的示例,如下所示
@Document(indexName = "parent-child", type = "parent-entity")
public class ParentEntity {
@Id
private String id;
@Field(type = FieldType.String, index = FieldIndex.analyzed, store = true)
private String name;
// setter/getter
public ParentEntity() {
}
public ParentEntity(String id, String name) {
this.id = id;
this.name = name;
}
}
@Document(indexName = "parent-child", type = "child-entity")
public class ChildEntity {
@Id
private String id;
@Field(type = FieldType.String, store = true)
@Parent(type = "parent-entity")
private String parentId;
@Field(type = FieldType.String, index = FieldIndex.analyzed, store = true)
private String name;
public ChildEntity() {
}
public ChildEntity(String id, String parentId, String name) {
this.id = id;
this.parentId = parentId;
this.name = name;
}
}
// 索引父级(您可以使用许多其他方法来索引,包括使用存储库)
ParentEntity parent1 = new ParentEntity("parent1", "First Parent");
IndexQuery parentIndex1 = new IndexQuery();
parentIndex1.setId(parent1.getId());
parentIndex1.setObject(parent1);
elasticsearchTemplate.index(parentIndex1);
ParentEntity parent2 = new ParentEntity("parent2", "Second Parent");
IndexQuery parentIndex2 = new IndexQuery();
parentIndex2.setId(parent2.getId());
parentIndex2.setObject(parent2);
elasticsearchTemplate.index(parentIndex2);
// 索引孩子
ChildEntity child1 = new ChildEntity("child1", parent1.getId(), "First");
IndexQuery childIndex1 = new IndexQuery();
childIndex1.setId(child1.getId());
childIndex1.setObject(child1);
childIndex1.setParentId(child1.getParentId());
elasticsearchTemplate.index(childIndex1);
ChildEntity child2 = new ChildEntity("child2", parent1.getId(), "Second");
IndexQuery childIndex2 = new IndexQuery();
childIndex2.setId(child2.getId());
childIndex2.setObject(child2);
childIndex2.setParentId(child2.getParentId());
elasticsearchTemplate.index(childIndex2);
// 搜索
在搜索父/子实体时有几个可用选项,包括has children、has parent和top children查询。
QueryBuilder query = topChildrenQuery("child-entity", QueryBuilders.termQuery("name", child1name.toLowerCase()));
SearchQuery searchQuery = new NativeSearchQueryBuilder().withQuery(query).build();
List<ParentEntity> parents = elasticsearchTemplate.queryForList(searchQuery, ParentEntity.class);
希望这个小例子能让你基本了解如何使用父子。查看ParentChildTests了解更多信息。
如果您还有更多问题,请随时与我们联系。