TQL Query Grammar

Example

Referenced by:

Query

• Label: Query label, will be copied into result
• From: Dot-delimited path to source container
• TqlAs is written as "As": Colon-separated whole result: result set [:instance] container specifiers
• FsExpression: any facet script expressions. They can be used both before the "Find/DeleteAll/Save/Create/Update/Delete" tags or after them. In either case, the execution is different
• ListQName Using: List of namespace hints
• Tag Using: Additional model definitions

Example

Referenced by:

• TqlQuery
• TqlFindDeleteAll
• TqlCrud

TqlAs

• TqlAs: This defines a micro-language for a string value
• TqlContainer - Instance container - this part is only used in Find. 

Example

Referenced by:

• TqlAs

TqlContainer

• TqlContainer: This is a [partial] string value definition.
• ValueOf(sid): use SID as a container
• ValueOf(name): use [model] name as a container
• $none: no container requested 

Example

Referenced by:

• TqlQuery

TqlFindDeleteAll

• TqlFindDeleteAll: Find or DeleteAll content
• From: Dot-delimited path to source container
• TqlAs is written as "As": Colon-separated whole result:result set[:instance] container specifiers
• Distinct: Reference to a model
• TqlOnly is written as "Only": List of attributes to fetch 

Example

Referenced by:

• TqlFindDeleteAll
• TqlCrud

TqlOnly

• TqlOnly: comma-separated list of attribute names with optional predicates
• Has optional "not." or "!" prefix
• not.: canonical prefix
• !: abbreviated prefix
• Attribute reference: can be qualified by a model name or a variable name
• "," and optional white space between attribute references

Example

Referenced by:

• TqlFindDeleteAll

TqlFindModel

• TqlFindModel: Tql Find query model content
• $Model=SubtypeOf(DataModel): this should set the $Model variable to be the name of any subtypes of DataModel (i.e. all Models). This variable value will be carried on to be used by TqlFindAttribute.
• TqlFindAttribute: This will use the $Model variable

Example

Referenced by:

• TqlFindModel

TqlFindAttribute

• TqlFindAttribute: Tql Find query model attribute content
• AttributeOf($Model): name of an attribute of the enclosing model.
• ConditionExpression: see definition on TQL Model Grammar

Example

Referenced by:

• TqlQuery

TqlCrud

• TqlCrud: CRUD operation content
• From: Dot-delimited path to source container
• TqlAs is written as "As": Colon-separated whole result:instance container specifiers
• TqlOnly is written as "Only": List of attributes to store

Example

Referenced by:

• TqlCrud

TqlCrudModel

• TqlCrudModel: Tql CRUD query model content
• $Model=SubtypeOf(DataModel): this should set the $Model variable to be the name of any subtypes of DataModel (i.e. all Models). This variable value will be carried on to be used by TqlCrudAttribute.
• TqlCrudAttribute: This will use the $Model variable

Example

Referenced by:

• TqlCrudModel

TqlCrudAttribute

• TqlCrudAttribute: Tql CRUD query model attribute content
• AttributeOf($Model): name of an attribute of the enclosing model; abbreviated form or extended form
• Value: actual value
• Version: optional version
• do: optional operation

Example

Referenced by:

• TqlCrudAttribute