Tag: getData

The wcf:getData tag retrieves data objects from a WebSphere Commerce service. The wcf:param tag and the wcf:contextData tags are subtags of the wcf:getData tag.

Tag information
Tag information	Value
Body Content	scriptless
Display Name	Get Data

Attributes

Attributes
Name	Required	Request-time	Type	Description
`var`	`true`	`false`	`java.lang.String`	The name of the exported scoped variable that is assigned the data that is retrieved from the WebSphere Commerce service. That is, the name of the variable that will hold the getData result. The type of variable is specified by the `type` attribute.
`type`	`true`	`false`	`java.lang.String`	The data type of the data that is to be retrieved. This value must be a fully qualified interface name of a noun SDO that is to be retrieved using the configured client facade. If the type is appended with "[]", then the variable that is specified by the `var` attribute is an array. Otherwise, the variable is not an array and is set to the first value found when the WebSphere Commerce service is invoked.
`scope`	`false`	`false`	`java.lang.String`	The scope for the variables that are specified by `var` and `varShowVerb`. Valid scope values are `page`, `request`, `session`, and `application`. The default value is `page`.
`expression`	`false`	`true`	`java.lang.String`	The search expression that retrieves the data. This expression must be a valid search expression for the configured component service. This attribute must not be specified when the `expressionBuilder` attribute is specified.
`expressionLanguage`	`false`	`true`	`java.lang.String`	The expression language that interprets the value of the `expression` attribute. The default value is `_wcf:XPath`. This attribute must not be specified when the `expressionBuilder` attribute is specified.
`expressionBuilder`	`false`	`true`	`java.lang.String`	The name of a configured expression builder. The expression builder composes the search expression and set the expression language. This attribute must not be specified when the `expression` attribute is specified. Named parameter values for the expression builder might be specified using the `wcf:param` subtag. The expressions are defined in the get-data-config.xml file for each component.
`recordSetReferenceId`	`false`	`true`	`java.lang.String`	The reference ID for this query. The value of the reference ID can be retrieved from the Show verb object that is stored in the variable that is specified by the `varShowVerb` attribute. Based on the paging parameters like `recordSetReferenceId` and `recordSetStartNumber`, the reference ID returns the exact page of records from the total set of records that are returned by the SQL.
`recordSetStartNumber`	`false`	`true`	`java.math.BigInteger`	The starting index from which to retrieve results from the result set.
`maxItems`	`false`	`true`	`java.math.BigInteger`	The maximum number of items to return.
`varShowVerb`	`false`	`false`	`java.lang.String`	The name of the exported scoped variable that holds the `Show` verb object that is retrieved from the WebSphere Commerce service. The type of variable is `com.ibm.commerce.oagis9.datatypes.ShowType`. The `Show` verb can contain the following status information about the result set: `recordSetReferenceId` - The internal identifier for the result set, so that it can be resolved on a subsequent request. `recordSetCompleteIndicator` - Indicates whether you reached the end of the result set. `recordSetTotal` - The total number of results in the result set. `recordSetCount` - The number of records from the result set that are being returned in this message. `recordSetStartNumber` - The starting index for the results that are being returned in this message.
`varException`	`false`	`false`	`java.lang.String`	The name of the exported scoped variable where the exception object is stored. This value is set only when an exception occurs while the expression builder or WebSphere Commerce service is invoked. The type of the exported variable is com.ibm.commerce.foundation.client.facade.bod.AbstractBusinessObjectDocumentException

Variables

No variables are defined for the wcf:getData tag.

Example

The following example uses the wcf:getData tag to retrieve the order object for the current shopping cart and assign it to a variable called "order":

<wcf:getData 
 type="com.ibm.commerce.order.facade.datatypes.OrderType" 
 var="order" 
 expressionBuilder="findCurrentShoppingCart">
   <wcf:contextData name="storeId" data="10001" />
   <wcf:param name="accessProfile" value="WC_OrderDetailsProfile" />
</wcf:getData>