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

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

java.lang.Object

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

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

All Implemented Interfaces:

DBExpression, HasSQLString, WindowingFunctionFramableInterface.EmptyFrameStart<A>, WindowingFunctionFramableInterface.FrameStart<A>, WindowingFunctionFramableInterface.FrameStartFollowing<A>, WindowingFunctionFramableInterface.WindowPart<A>

Enclosing class:

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

public static class WindowFunctionFramable.OffsetFollowingStart<A extends EqualExpression<?,?,?>>
extends WindowFunctionFramable.FrameStart<A>
implements WindowingFunctionFramableInterface.FrameStartFollowing<A>

Field Summary

Fields inherited from class nz.co.gregs.dbvolution.expressions.windows.WindowFunctionFramable.FrameStart

offset, type

Constructor Summary

Constructors

Constructor	Description
OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type, int offset)
OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type, long offset)
OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type, IntegerExpression offset)

Method Summary

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

Methods inherited from interface nz.co.gregs.dbvolution.expressions.DBExpression

createSQLForFromClause, createSQLForGroupByClause, getQueryableDatatypeForExpressionValue, getTablesInvolved, isAggregator, isComplexExpression, isPurelyFunctional, isWindowingFunction

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.FrameStart

createSQLForFromClause, createSQLForGroupByClause, getQueryableDatatypeForExpressionValue, getRequiredExpressionClass, getTablesInvolved, isAggregator, isComplexExpression, isWindowingFunction

Methods inherited from interface nz.co.gregs.dbvolution.expressions.windows.WindowingFunctionFramableInterface.WindowPart

getRequiredExpressionClass

Constructor Detail

OffsetFollowingStart

public OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type,
                            int offset)

OffsetFollowingStart

public OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type,
                            long offset)

OffsetFollowingStart

public OffsetFollowingStart(WindowFunctionFramable.FrameType<A> type,
                            IntegerExpression offset)

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.

Specified by:

toSQLString in interface HasSQLString

Parameters:

defn - the target database

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Returns:

the DBValue formatted as a SQL snippet

copy

public WindowFunctionFramable.OffsetFollowingStart<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.FrameStart<A extends EqualExpression<?,?,?>>

Returns:

a copy of this DBValue

forFollowing

public A forFollowing(int offset)

Specified by:

forFollowing in interface WindowingFunctionFramableInterface.FrameStart<A extends EqualExpression<?,?,?>>

forFollowing

public A forFollowing(IntegerExpression offset)

Specified by:

forFollowing in interface WindowingFunctionFramableInterface.FrameStart<A extends EqualExpression<?,?,?>>

unboundedFollowing

public A unboundedFollowing()

Specified by:

unboundedFollowing in interface WindowingFunctionFramableInterface.FrameStart<A extends EqualExpression<?,?,?>>