检索与搜索查询匹配的所有文档以及登录用户的文档

Question

我是 ES 新手，需要帮助解决这个用例。

我的 ES 索引有不同类型的文档（示例如下）。我需要根据以下条件返回匹配文档的搜索查询帮助：“返回在“标题”中具有匹配单词的“课程”和“教师”类型的所有文档，并且仅返回与“标题”中的单词匹配的“学生”类型文档'+'老师='“

例如：如果登录的教师 ID 是“imaa-tea-2”并且搜索词是“science”，我希望搜索查询返回文档 2、4、5 和 8（8 因为教师 = imaa-tea- 2).

{
    "type": "lesson",
    "id": 1,
    "subject": "mathematics",
    "title": "second grade additions",
    "class": "second",
    "link": "http://myskoolblhahblha/simple_add",
    "id": "math2-11",
    "description": "this is custom syllabus for imaa"
}

{
    "type": "lesson",
    "id": 2,
    "subject": "science",
    "title": "living things",
    "class": "second",
    "link": "http://myskoolblhahblha/life",
    "id": "sc2-01",
    "description": "this is custom syllabus for imaa and mitkids"
}

{
    "type": "teacher",
    "id": 3,
    "title": "second grade math teacher at imaa",
    "details": {
        "id": "imaa-tea-1",
        "name": "david jack",
        "school": "institue of math & science for all ages",
        "degree": "bachelor of applied mathematics"
    }
}

{
    "type": "teacher",
    "id": 4,
    "title": "second grade science teacher at imaa",
    "details": {
        "id": "imaa-tea-2",
        "name": "john wick",
        "school": "institue of math & science for all ages",
        "degree": "bachelor of science"
    }
}

{
    "type": "teacher",
    "id": 5,
    "title": "first grade science teacher at salsa",
    "details": {
        "id": "salsa-1",
        "name": "big hero",
        "school": "salsa elementary school",
        "degree": "bachelor of education"
    }
}

{
    "type": "student",
    "id": 6,
    "title": "student of imaa",
    "id": "imaa-stu-1",
    "name": "lilly john",
    "class": "second",
    "school": "institue of math & science for all ages",
    "teacher": "imaa-tea-1"
}

{
    "type": "student",
    "id": 7,
    "title": "math student of imaa",
    "id": "imaa-stu-2",
    "name": "kala jam",
    "class": "second",
    "school": "institue of math & science for all ages",
    "teacher": "imaa-tea-2"

}

{
    "type": "student",
    "id": 8,
    "title": "science student of imaa",
    "id": "imaa-stu-3",
    "name": "adam dima",
    "class": "third",
    "school": "institue of math & science for all ages",
    "teacher": "imaa-tea-2"
}

{
    "type": "student",
    "id": 9,
    "title": "science student of salsa",
    "id": "salsa-stu-3",
    "name": "mary kumar",
    "class": "first",
    "school": "salsa elementary",
    "teacher": "salsa-1"
}

Answer 1

让我们修改一下问题

据我了解，您正在寻找以下条件：

• 所有文档的标题字段中都应有

  science

  。
• 需满足以下条件之一：
  • 类型为

    teacher

    或

    lesson

  • 类型为

    student

    并且教师字段为

    <logged in teacher id>

基于此解释，我们期望查询返回 4、5 和 8 个文档。

请注意，您还提到了文档 2，尽管它的

science

为

subject

而不是

title

查询

您可以使用BooleanQuery进行如此复杂的查询，包括And、Ors。这是您提供的文件的示例：

{
"query": {
    "bool": {
      "must": [ // this condition must be met for all documents!
        {"match": {
          "title": "science"
        }}
      ], 
      "minimum_should_match": 1, 
// here we have multiple conditions which at least one of them should be met.
//(type is teacher or lesson) OR (the type is student AND the teacher is imaa-tea-2)
      "should": [ 
        {
          "term": {
            "type.keyword": {
              "value": "teacher"
            }
          }
        },
        {
          "term": {
            "type.keyword": {
              "value": "lesson"
            }
          }
        },
        {
          "bool": {
            "must": [
              {"term": {
                "type.keyword": {
                  "value": "student"
                }
              }},
              {
                "term": {
                  "teacher.keyword": {
                    "value": "imaa-tea-2"
                  }
                }
              }
            ]
          }
        }
      ]
    }
  }
}

注意：您可能想知道为什么我使用

type.keyword

而不是

type

，它的解释超出了这个问题的范围。所以我希望您已经明白了我的回答的要点，以解决您的问题。