QueryBuilder

age-schema-client v0.3.0

---

age-schema-client / QueryBuilder

Class: QueryBuilder<T>

Defined in: src/query/builder.ts:37

Query builder class

Extended by

• PathQueryBuilder
• AnalyticsQueryBuilder

Type Parameters

Type Parameter
T extends SchemaDefinition

Implements

• IQueryBuilder<T>

Constructors

Constructor

new QueryBuilder<T>(
   schema, 
   queryExecutor, 
graphName): QueryBuilder<T>;

Defined in: src/query/builder.ts:60

Create a new query builder

Parameters

Parameter	Type	Default value	Description
schema	T	undefined	Schema definition
queryExecutor	QueryExecutor	undefined	Query executor
graphName	string	'default'	Graph name

Returns

QueryBuilder<T>

Methods

match()

Implementation of the match method

Call Signature

match<L>(label, alias): IMatchClause<T, L>;

Defined in: src/query/builder.ts:71

Add MATCH clause for a vertex

Type Parameters

Type Parameter
L extends string | number | symbol

Parameters

Parameter	Type
label	L
alias	string

Returns

IMatchClause<T, L>

Implementation of

IQueryBuilder.match

Call Signature

match<E>(
   sourceAlias, 
   edgeLabel, 
targetAlias): IEdgeMatchClause<T>;

Defined in: src/query/builder.ts:76

Add MATCH clause for an edge between two previously matched vertices

Type Parameters

Type Parameter
E extends string | number | symbol

Parameters

Parameter	Type
sourceAlias	string
edgeLabel	E
targetAlias	string

Returns

IEdgeMatchClause<T>

Implementation of

IQueryBuilder.match

Call Signature

match<E>(
   sourceAlias, 
   edgeLabel, 
   targetAlias, 
edgeAlias): IEdgeMatchClause<T>;

Defined in: src/query/builder.ts:85

Add MATCH clause for an edge between two previously matched vertices with an edge alias

Type Parameters

Type Parameter
E extends string | number | symbol

Parameters

Parameter	Type
sourceAlias	string
edgeLabel	E
targetAlias	string
edgeAlias	string

Returns

IEdgeMatchClause<T>

Implementation of

IQueryBuilder.match

---

where()

where(condition, params): this;

Defined in: src/query/builder.ts:234

Add WHERE clause

Parameters

Parameter	Type	Description
condition	string	Condition expression
params	Record<string, any>	Parameters

Returns

this

This query builder

Implementation of

IQueryBuilder.where

---

return()

return(...expressions): this;

Defined in: src/query/builder.ts:278

Add RETURN clause

Parameters

Parameter	Type	Description
...expressions	string[]	Return expressions

Returns

this

This query builder

Implementation of

IQueryBuilder.return

---

orderBy()

orderBy(expression, direction): this;

Defined in: src/query/builder.ts:290

Add ORDER BY clause

Parameters

Parameter	Type	Default value	Description
expression	string	undefined	Expression to order by
direction	OrderDirection	OrderDirection.ASC	Order direction

Returns

this

This query builder

Implementation of

IQueryBuilder.orderBy

---

limit()

limit(count): this;

Defined in: src/query/builder.ts:311

Add LIMIT clause

Parameters

Parameter	Type	Description
count	number	Limit count

Returns

this

This query builder

Implementation of

IQueryBuilder.limit

---

skip()

skip(count): this;

Defined in: src/query/builder.ts:322

Add SKIP clause

Parameters

Parameter	Type	Description
count	number	Skip count

Returns

this

This query builder

Implementation of

IQueryBuilder.skip

---

with()

with(...expressions): this;

Defined in: src/query/builder.ts:333

Add WITH clause

Parameters

Parameter	Type	Description
...expressions	string[]	With expressions

Returns

this

This query builder

Implementation of

IQueryBuilder.with

---

unwind()

unwind(expression, alias): this;

Defined in: src/query/builder.ts:345

Add UNWIND clause

Parameters

Parameter	Type	Description
expression	string	Expression to unwind
alias	string	Alias for unwound items

Returns

this

This query builder

Implementation of

IQueryBuilder.unwind

---

withParam()

withParam(name, value): this;

Defined in: src/query/builder.ts:357

Add a parameter to the query

Parameters

Parameter	Type	Description
name	string	Parameter name
value	any	Parameter value

Returns

this

This query builder

Implementation of

IQueryBuilder.withParam

---

setParam()

setParam(key, value): Promise<QueryBuilder<T>>;

Defined in: src/query/builder.ts:373

Set a parameter in the age_params temporary table

This method inserts a parameter into the age_params temporary table using an INSERT ON CONFLICT UPDATE statement. The parameter can then be referenced in a Cypher query using the get_age_param() function.

Parameters

Parameter	Type	Description
key	string	Parameter key
value	any	Parameter value (will be converted to JSON)

Returns

Promise<QueryBuilder<T>>

This query builder

Implementation of

IQueryBuilder.setParam

---

withParamFunction()

withParamFunction(functionName, alias): this;

Defined in: src/query/builder.ts:398

Add a WITH clause that calls a function to get parameters

This is specifically for Apache AGE compatibility, as it requires parameters to be passed via a function call in a WITH clause.

Parameters

Parameter	Type	Description
functionName	string	Fully qualified function name (e.g., 'schema.get_params')
alias	string	Alias for the function result (e.g., 'params')

Returns

this

This query builder

Implementation of

IQueryBuilder.withParamFunction

---

withAgeParam()

withAgeParam(key, alias): this;

Defined in: src/query/builder.ts:413

Add a WITH clause that calls the get_age_param function

This method adds a WITH clause that calls the get_age_param function to retrieve a parameter from the age_params temporary table.

Parameters

Parameter	Type	Description
key	string	Parameter key to retrieve
alias	string	Alias for the parameter in the query

Returns

this

This query builder

Implementation of

IQueryBuilder.withAgeParam

---

withAllAgeParams()

withAllAgeParams(alias): this;

Defined in: src/query/builder.ts:428

Add a WITH clause that calls the get_all_age_params function

This method adds a WITH clause that calls the get_all_age_params function to retrieve all parameters from the age_params temporary table.

Parameters

Parameter	Type	Default value	Description
alias	string	'params'	Alias for the parameters object in the query

Returns

this

This query builder

Implementation of

IQueryBuilder.withAllAgeParams

---

execute()

execute<R>(options): QueryBuilderResult<R>;

Defined in: src/query/builder.ts:441

Execute the query

Type Parameters

Type Parameter	Default type
R	any

Parameters

Parameter	Type	Description
options	QueryExecutionOptions	Query execution options

Returns

QueryBuilderResult<R>

Query result

Throws

Error if query validation fails

Implementation of

IQueryBuilder.execute

---

reset()

reset(): this;

Defined in: src/query/builder.ts:576

Reset the query builder state

Returns

this

This query builder

---

toCypher()

toCypher(): string;

Defined in: src/query/builder.ts:587

Get the Cypher query string

Returns

string

Cypher query string

Implementation of

IQueryBuilder.toCypher

---

getParameters()

getParameters(): Record<string, any>;

Defined in: src/query/builder.ts:599

Get the query parameters

Returns

Record<string, any>

Query parameters

Implementation of

IQueryBuilder.getParameters

---

validateQuery()

validateQuery(): string[];

Defined in: src/query/builder.ts:616

Validate the query against the schema

Returns

string[]

Validation errors, if any