Package nz.co.gregs.dbvolution.expressions.windows

Class WindowFunctionFramable.Groups<A extends EqualExpression<?,?,?>>

java.lang.Object

nz.co.gregs.dbvolution.expressions.windows.WindowFunctionFramable.FrameType<A>

nz.co.gregs.dbvolution.expressions.windows.WindowFunctionFramable.Groups<A>

All Implemented Interfaces:

DBExpression, HasSQLString, WindowingFunctionFramableInterface.FrameType<A>, WindowingFunctionFramableInterface.WindowPart<A>

Enclosing class:

WindowFunctionFramable<A extends EqualExpression<?,?,?>>

public static class WindowFunctionFramable.Groups<A extends EqualExpression<?,?,?>>
extends WindowFunctionFramable.FrameType<A>

Constructor Summary

Constructors

Constructor	Description
Groups(WindowFunctionFramable.Sorted<A> sorted)

Method Summary

Modifier and Type	Method	Description
WindowFunctionFramable.Groups<A>	copy()	A Complete Copy Of This DBValue.
String	toSQLString(DBDefinition defn)	Produces the snippet provided by this class.

Methods inherited from class java.lang.Object

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

Methods inherited from class nz.co.gregs.dbvolution.expressions.windows.WindowFunctionFramable.FrameType

createSQLForFromClause, createSQLForGroupByClause, currentRow, forFollowing, forFollowing, getQueryableDatatypeForExpressionValue, getRequiredExpressionClass, getSorted, getTablesInvolved, isAggregator, isComplexExpression, isPurelyFunctional, isWindowingFunction, offsetPrecedingAndCurrentRow, offsetPrecedingAndCurrentRow, onlyCurrentRow, preceding, preceding, unboundedPreceding, unboundedPrecedingAndCurrentRow

Constructor Detail

Groups

public Groups(WindowFunctionFramable.Sorted<A> sorted)

Method Detail

toSQLString

public String toSQLString(DBDefinition defn)

Description copied from interface: HasSQLString

Produces the snippet provided by this class.

This is only used internally.

If you are extending DBvolution and adding a new function this is the place to format the information for use in SQL. A DBDefinition instance is provided to supply context and so your SQL can used on multiple database engines.

Parameters:

defn - the target database

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Returns:

the DBValue formatted as a SQL snippet

copy

public WindowFunctionFramable.Groups<A> copy()

Description copied from interface: DBExpression

A Complete Copy Of This DBValue.

Immutability in DBvolution is maintain by internally copying objects.

This method enables immutability by performing a deep copy of the object.

Singletons may return themselves but all other objects must return a new instance with copies of all mutable fields.

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Specified by:

copy in interface DBExpression

Specified by:

copy in interface WindowingFunctionFramableInterface.WindowPart<A extends EqualExpression<?,?,?>>

Specified by:

copy in class WindowFunctionFramable.FrameType<A extends EqualExpression<?,?,?>>

Returns:

a copy of this DBValue