Spring Data ElasticSearch parnt/child search
2016-03-10 16:05
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http://stackoverflow.com/questions/23730641/parent-child-relationships-in-spring-data-elastic-search
父实体类及子实体类的搜索方法如下:
[java] view plaincopy
@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;
}
}
// 为父实体类做索引(你还可以使用许多其它的方法做索引 例如: repositories)
[html] view plaincopy
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);
// 为子实体类做索引
[html] view plaincopy
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
对于主从结构的实体类,有三种可选的搜索方法:
1.has children 点击打开链接
2.has parent 点击打开链接
3.top children 点击打开链接
[html] view plaincopy
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);
/article/2273411.html
父实体类及子实体类的搜索方法如下:
[java] view plaincopy
@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;
}
}
// 为父实体类做索引(你还可以使用许多其它的方法做索引 例如: repositories)
[html] view plaincopy
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);
// 为子实体类做索引
[html] view plaincopy
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
对于主从结构的实体类,有三种可选的搜索方法:
1.has children 点击打开链接
2.has parent 点击打开链接
3.top children 点击打开链接
[html] view plaincopy
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);
/article/2273411.html
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