Package com.ibm.fhir.database.utils.query

Class WhereAdapter

java.lang.Object

com.ibm.fhir.database.utils.query.BaseWhereAdapter<WhereAdapter>

com.ibm.fhir.database.utils.query.WhereAdapter

public class WhereAdapter
extends BaseWhereAdapter<WhereAdapter>

Adapter to help build the WHERE clause expression. To allow a fluent style, we construct an expression tree

Constructor Summary

Constructors

Constructor	Description
WhereAdapter(Select select, WhereClause whereClause)	Public constructor to start the WHERE clause in a select statement
WhereAdapter(Select select, WhereClause whereClause, ExpNode predicate)
WhereAdapter(Select select, WhereClause whereClause, String predicate)	Public constructor
WhereAdapter(Select select, WhereClause whereClause, String tableAlias, String columnName)	Convenience for when the statement is written like .where("lr", "current_resource_id").eq("r", "resource_id")

Method Summary

Modifier and Type	Method	Description
Select	build()	Get the select statement wrapped by this adapter
protected WhereAdapter	getThis()	Returns the sub-class type-specific instance of the class.
GroupByAdapter	groupBy(String... expressions)	Start building the GROUP BY clause
OrderByAdapter	orderBy(String... expressions)	Start building the ORDER BY clause

Methods inherited from class com.ibm.fhir.database.utils.query.BaseWhereAdapter

acos, acos, add, and, and, and, and, and, bind, bind, bind, bind, bind, bind, coalesce, col, col, cos, cos, div, eq, eq, eq, eq, eq, eq, eq, eq, escape, escape, escape, escape, escape, exists, filter, getExpression, getPredicateParser, gt, gt, gt, gt, gt, gt, gte, gte, gte, gte, gte, gte, in, in, in, inLiteral, inLiteralLong, isNotNull, isNull, leftParen, like, like, like, like, like, literal, literal, literal, lt, lt, lt, lt, lt, lt, lte, lte, lte, lte, lte, lte, mult, neq, neq, neq, neq, neq, neq, neq, not, notExists, operator, or, or, or, or, or, radians, radians, rightParen, sin, sin, sub, where, where

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WhereAdapter

public WhereAdapter(Select select,
                    WhereClause whereClause)

Public constructor to start the WHERE clause in a select statement

Parameters:

select -

whereClause -

WhereAdapter

public WhereAdapter(Select select,
                    WhereClause whereClause,
                    String predicate)

Public constructor

Parameters:

select -

whereClause -

predicate -

WhereAdapter

public WhereAdapter(Select select,
                    WhereClause whereClause,
                    String tableAlias,
                    String columnName)

Convenience for when the statement is written like .where("lr", "current_resource_id").eq("r", "resource_id")

Parameters:

select -

whereClause -

tableAlias -

columnName -

WhereAdapter

public WhereAdapter(Select select,
                    WhereClause whereClause,
                    ExpNode predicate)

Method Detail

groupBy

public GroupByAdapter groupBy(String... expressions)

Start building the GROUP BY clause

Parameters:

expressions -

Returns:

orderBy

public OrderByAdapter orderBy(String... expressions)

Start building the ORDER BY clause

Parameters:

expressions -

Returns:

build

public Select build()

Get the select statement wrapped by this adapter

Returns:

getThis

protected WhereAdapter getThis()

Description copied from class: BaseWhereAdapter

Returns the sub-class type-specific instance of the class. Used as the return value in fluent methods.

Specified by:

getThis in class BaseWhereAdapter<WhereAdapter>

Returns: