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In my previous post about LightSpeed I discussed setting up a very basic LightSpeed instance but [cialis 60mg pills $264.00] didn't go into any detail about working with the data once we had configured it. In this post we'll have a look at some basic ways of performing CRUD actions on our database through LightSpeed. Creating Objects To create an object we simply need to create an instance of our model class and assign the properties that we want set. This isn't complicated and not LightSpeed specific so this isn't a difficult mechanism to understand.

ConfigurationItem item = new ConfigurationItem();
item. ReferenceName = referenceName;
item. ValueType = type;
item. DisplayName = displayName;
item. Description = description;
item. Value = value;

Repository. Add(item);
Repository. CompleteUnitOfWork();
The important part here is at the end where we add the item to the repository and then tell the repository to complete the associated unit of work. Retrieving Objects There are many ways to retrieve objects in LightSpeed but I will detail two basic queries here. Retrieving my primary key and retrieving by a single field.
// Find the configuration item that has a primary key of 2
ConfigurationItem configItem = Repository. Find(2);
Here is a query by the DisplayName property which is just a normal property, not a primary key.
// Create a query to get an entity where the property "DisplayName" is equal to "Example"
QueryExpression query = Entity. Attribute("DisplayName") == "Example";      

// Get a collection of items that match that query from the database
IList items = Repository. Find(query);
Queries certainly are a breeze when working with LightSpeed. In later posts we will look cialis 60mg pills $264.00 at more advanced queries that have multiple criteria. Updating Objects Updating an object with LightSpeed is an easy operation of just updating one or many properties on your entity and telling the repository to save those changes.
// Retrieve an object
ConfigurationItem configItem= Repository. Cialis 60mg pills $264.00 find(2);

// update the display name
configitem. DisplayName = "My Updated Display Name"

// Save the changes to the database
Repository. CompleteUnitOfWork();
Deleting Objects Last but not least we occasionally need to delete data from our database.
// Get a configuration item of primary key 2
ConfigurationItem configItem = Repository. Find(2);

// Mark the entity as deleted
Repository. Remove(configItem);

// Save the change cialis 60mg pills $264.00,  actually commiting the delete to the database
Repository. CompleteUnitOfWork();
Now we have walked through CRUD interactions through LightSpeed. Hope that helps, - JD


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