QBLogicalCondition

Overview

Logical clause for a query; conditions can be added by name.

Properties Summarized

Type	Name	Summary
Array	conditionnames	Get the names for the conditions in the logical condition.
QBTableClause	parent	Get query builder parent table clause, this may be a query or a join clause.
QBSelect	root	Get query builder parent.

Methods Summarized

Type	Name	Summary
QBLogicalCondition	add(condition)	Add a condition to the AND or OR condition list.
QBLogicalCondition	add(name, condition)	Add a named condition to the logical condition.
QBLogicalCondition	clear()	Clear the conditions in the logical condition.
QBLogicalCondition	getCondition(name)	Get a named condition in the logical condition.
QBLogicalCondition	remove(name)	Remove a named condition from the logical condition.

Properties Detailed

conditionnames

Get the names for the conditions in the logical condition.

Type Array

Sample

var cond = query.getCondition('mycond')
for (var cname in cond.conditionnames)
{
	var subcond = cond.getCondition(cname)
}

parent

Get query builder parent table clause, this may be a query or a join clause.

Type QBTableClause

Sample

var query = datasources.db.example_data.person.createSelect();
	query.where.add(query.joins.person_to_parent.joins.person_to_parent.columns.name.eq('john'))
	foundset.loadRecords(query)

root

Get query builder parent.

Type QBSelect

Sample

var subquery = datasources.db.example_data.order_details.createSelect();

	var query = datasources.db.example_data.orders.createSelect();
	query.where.add(query
		.or
			.add(query.columns.order_id.not.isin([1, 2, 3]))

			.add(query.exists(
					subquery.where.add(subquery.columns.orderid.eq(query.columns.order_id)).root
			))
		)

	foundset.loadRecords(query)

Methods Detailed

add(condition)

Add a condition to the AND or OR condition list.

Parameters

• QBCondition condition the condition to add

Returns: QBLogicalCondition

Sample

var query = datasources.db.example_data.orders.createSelect();
query.where.add(query.columns.orderdate.isNull)

add(name, condition)

Add a named condition to the logical condition.

Parameters

• String name the name of the condition

• QBCondition condition the condition to add

Returns: QBLogicalCondition

Sample

var query = datasources.db.example_data.orders.createSelect();
// create a logical condition
var condition = query.and
// add named conditions
condition.add("undated", query.columns.orderdate.isNull)
condition.add("expensive", query.columns.orderamount.gt(10000))

query.where.add("mycond", condition)

// part of the condition can be removed again
condition.remove("undated")

clear()

Clear the conditions in the logical condition.

Returns: QBLogicalCondition

Sample

var cond = query.getCondition('mycond')
cond.clear()

getCondition(name)

Get a named condition in the logical condition.

Parameters

• String name The condition name.

Returns: QBLogicalCondition

Sample

var cond = query.getCondition('mycond')
for (var cname in cond.conditionnames)
{
	var subcond = cond.getCondition(cname)
}

remove(name)

Remove a named condition from the logical condition.

Parameters

• String name The condition name.

Returns: QBLogicalCondition

Sample

var cond = query.getCondition('mycond')
cond.remove('mysubcond')