APIクエリー言語

The query language described in this article is implemented partially or in full by Wix APIs supporting query capabilities. You may see some similarities between the Wix API Query Language and MongoQL. This is because the style of the Wix API Query Language is heavily influenced by MongoQL.

Syntax

A query object consists of 5 optional parts:

  • フィルター: Which results to return.
  • sort: In what order.
  • paging: Return only some of the matched entities.
  • fields: Field projection. Returns only part of each entity.
  • fieldsets: Predefined, named sets of fields with common use. This is a shorthand provided by individual APIs.

Each query is always a single JSON object. An empty JSON object returns all records according to the API's default paging and sort order.

The query object can define a key for each of the above parts:

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について フィルター section

The filter section is a single json object { } with the following rules:

Equality

The format { "<field>": <value> } specifies an equality condition.

For example, { "status": "DONE" } matches all entities where status is "DONE".

Operators

Operators use the format { "<field>": { "$<operator>": <value> } }.

For example, { "status": { "$in": ["PENDING", "DONE"] } } matches all entities where status is "PENDING" または "DONE".

The operators specified below are supported.

Comparison operators

  • $eq: Matches values that are equal to a specified value.
  • $ne: Matches all values that are not equal to a specified value.
  • $gt: Matches values that are greater than a specified value.
  • $gte: Matches values that are greater than or equal to a specified value.
  • $lt: Matches values that are less than a specified value.
  • $lte: Matches values that are less than or equal to a specified value.
  • $in: Matches any of the values specified in an array.
  • $nin: Matches none of the values specified in an array.
  • $startsWith: Matches strings that start with a specified value. Not case-sensitive.
  • $isEmpty: Matches strings or arrays that are empty or not empty, depending on whether the specified operand is 真の または 擬似.

Logical operators

  • $and: Joins query clauses with a logical AND and returns all items that match the conditions of both clauses.
  • $or: Joins query clauses with a logical OR and returns all items that match the conditions of either clause.
  • $not: Inverts the effect of a query expression and returns items that don't match the query expression.

Element operators

  • $exists: Matches items where the specified field exists and has a non-null value.

Array operators

  • $hasAll: Matches arrays that contain all elements specified in the query.
  • $hasSome: Matches arrays that contain at least one element specified in the query.

Sample queries

In the following example, the compound query returns all entities where the status equals "A" and either qty 以下である。 30 または item starts with the character p:

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The following example queries entities where the field tags value is an array with exactly two elements, "red" そして "blank", in the specified order:

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The following example queries for all entities where tags is an array that contains the string "red" as one of its elements, or that tags is the string "red":

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The following query matches entities that do not contain the item field, or where the item field has no value:

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について sort section

について sort section is an array of field names and sort order. If order is not specified for a field, the field is sorted in ascending order. Sorting is applied to the first sort item, then the second, and so on:

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について paging section

について paging section describes the size of the data set to return per response and how many records to skip. Each API can support offset paging, cursor paging, or both. See your specific API for information on supported paging options.

Offset paging

With offset paging, you provide a limit そして offset with each request. To retrieve additional pages, submit subsequent requests with an increased offset equal to the previous page's limit plus offset.

For example, this offset request returns records 41 through 60:

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Cursor paging

With cursor paging, each request returns a カーソル object that contains cursor strings that point to the next page, previous page, or both. To retrieve either page, use the returned next または prev cursor in the next request's cursor parameter.

Take this response object, for example:

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You can use the returned next cursor to retrieve the next page of results by forming your request like this:

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について fields section

について fields section is an array of field paths to return. If a field path points to an object, the entire sub-object is returned. Subsets of sub-objects can be returned by using dot notation. In this example, the returned entities contain firstName より 名称 sub-object and the entire address object:

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について fieldsets section

An API may provide named projections to save clients from specifying individual fields in common cases. For example, the Contacts API implements a fieldset named BASIC that contains only アイドル, revision, info.name.first, info.name.last, primaryInfo.emailそして primaryInfo.phone. To use a fieldset, specify its name in the fieldsets array. If both fieldsets そして fields sections exist, the union of both is returned. For example:

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