pdf417 barcode generator c# LINQ TO C SLA in Visual C#

Encoder PDF417 in Visual C# LINQ TO C SLA

CHAPTER 14 LINQ TO C SLA
Draw PDF-417 2d Barcode In C#.NET
Using Barcode generation for .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
Decoding PDF 417 In C#
Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Managing the Index Set
Generating Barcode In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Make QR Code JIS X 0510 In C#
Using Barcode drawer for .NET Control to generate, create QR image in .NET applications.
www.OnBarcode.com
Indices are maintained on fields that are marked with the Indexable property under circumstances described earlier in this chapter. These indices are managed through the _indexSet field, which is an object that conforms to the IIndexSet interface. The index set hooks into the collection by being made aware of all changes, additions, and removals that can affect the index. Calls to methods on the _indexSet are made throughout BusinessListBase and ReadOnlyListBase, making it possible for the _indexSet to maintain itself.
Generate UPC-A In C#
Using Barcode drawer for VS .NET Control to generate, create UPC A image in .NET framework applications.
www.OnBarcode.com
Encoding Linear 1D Barcode In Visual C#
Using Barcode drawer for .NET Control to generate, create Linear 1D Barcode image in .NET applications.
www.OnBarcode.com
Implementations of IIndex
Encoding PDF 417 In C#
Using Barcode maker for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in .NET applications.
www.OnBarcode.com
Paint USPS Confirm Service Barcode In C#
Using Barcode generation for .NET Control to generate, create Planet image in .NET framework applications.
www.OnBarcode.com
Depending on the nature of your child object, there are several ways you can find items in a list quickly. As mentioned previously, you can organize those child objects that are comparable that is, where someObj.SomeVal < x has meaning and is implemented in a way that makes that query faster. CSLA .NET uses a balanced tree structure a red-black tree to perform this function. Other child objects that are not IComparable (such as Color) use a dictionary-based index instead. One of the responsibilities of the index set is to choose an appropriate implementation of IIndex based on the type of object being indexed. An ideal indexing strategy allows not only for equalitybased queries to use the index, but also for range-based queries to use the index.
PDF 417 Recognizer In VB.NET
Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Encoding PDF 417 In Visual Studio .NET
Using Barcode generator for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Indices on IComparable Properties: Red-Black Tree
Painting Code 128 Code Set C In None
Using Barcode printer for Software Control to generate, create Code 128A image in Software applications.
www.OnBarcode.com
PDF417 Reader In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
The red-black tree structure allows you to infer the order of the items. All items to the left of a given node in the tree are guaranteed to be lower. All items to the right of a given node in the tree are guaranteed to be higher. In the less-than operation, the key to making a ranged query work becomes enumerating through the left subtree of the node that either matches or is the lowest value that is higher than the value being compared. In a greater-than operation, it is the exact reverse: enumerating through the right subtree of the node that either matches or is the highest value that is lower than the value being compared. The performance of lookup over balanced trees, such as red-black trees, is typically log(N) + 2, while retaining a good deal of memory efficiency and the ability to quickly find those items higher or lower than a given item. The performance characteristics of this lookup are good. Because CSLA .NET uses a red-black tree a tree that guarantees that the depth is no deeper than log(N) + 2 you know that finding one item out of one million will take, at most, 22 comparison operations. Depending on where the item is, that same item without an index can take up to a million comparison operations, since without an index, each object has to be compared.
Creating Barcode In Visual Basic .NET
Using Barcode creator for .NET framework Control to generate, create Barcode image in .NET applications.
www.OnBarcode.com
Drawing Data Matrix 2d Barcode In Objective-C
Using Barcode encoder for iPad Control to generate, create ECC200 image in iPad applications.
www.OnBarcode.com
Indices on Other Properties: Dictionary
PDF 417 Printer In None
Using Barcode printer for Online Control to generate, create PDF417 image in Online applications.
www.OnBarcode.com
Creating EAN / UCC - 13 In Java
Using Barcode maker for Android Control to generate, create EAN / UCC - 14 image in Android applications.
www.OnBarcode.com
When the property you re building an index on does not implement IComparable, you can t use those structures in any kind of tree implementation, since placement of an item in a tree depends on item comparison. Therefore, to implement an index on a non-IComparable property, you need to use a Dictionary to enable fast lookup for equality-based queries. The performance characteristics of the Dictionary are actually a little bit faster than a red-black tree most of the time, assuming that the GetHashCode() implementation generates a high probability that calls on different objects of your child type generate unique values. However, because there is a chance, however small, that two different objects can generate the same hash code, you may require more than the single compare operation that is typical with Dictionary. If you were to override GetHashCode() in a manner where you return the same number for all instances of your object, you would end up with zero benefit to using indexing at all.
Code 128A Generator In None
Using Barcode creation for Microsoft Excel Control to generate, create USS Code 128 image in Microsoft Excel applications.
www.OnBarcode.com
Barcode Scanner In Visual Basic .NET
Using Barcode Control SDK for .NET framework Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
www.OnBarcode.com
DataMatrix Printer In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create Data Matrix ECC200 image in ASP.NET applications.
www.OnBarcode.com
Making PDF-417 2d Barcode In Visual Basic .NET
Using Barcode maker for .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.