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## Uses of Package
com.sas.iquery.metadata.expr

Packages that use com.sas.iquery.metadata.expr
com.sas.iquery.builder | Classes in the `com.sas.iquery.builder` package are used to easily build up complex Intelligent Query objects.
com.sas.iquery.dataservices | Provides utility classes and methods that are used to read information maps and retrieve filter values.
com.sas.iquery.metadata.business | The main package that provides modeling for SAS Query Services's two business models (information maps and data selections), which provide a logical layer of metadata modeling above the physical layer model.
com.sas.iquery.metadata.business.step.olap | Provides a set of modeled "step" operations that can be applied, in a particular order, to OLAP data items and business queries in order to filter the data that gets returned when business queries are executed.
com.sas.iquery.metadata.expr | Provides classes that are used to model expressions, which are used to compose data items and filters.
com.sas.iquery.metadata.expr.olap | Provides classes used to define OLAP expressions usable within a business model for defining portions of an OLAP business query.
com.sas.iquery.metadata.expr.relational | Provides classes that are used to model relational database expressions which are typically used when defining the expression portion of filters.
com.sas.iquery.metadata.serverprop | Provides specific information (via a ServerProperties object) about the capabilities of the server, such as operators and recognized functions.
com.sas.iquery.util | Utility classes that SAS Query Services makes available for use with its models.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.builder
ExpressionInterface Specifies an interface.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.dataservices
ExpressionInterface Specifies an interface.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.business
ConditionalRelationType Contains the types of conditional relations (AND and OR) that are used to create compound objects such as `CompoundConditionalExpression` objects, `MultipleConditionalExpression` objects, and `CompoundFilter` objects.
DataItemContainerExpression Specifies ExpressionInterface classes that can (potentially) contain a data item as part of their expression.
ExpressionInterface Specifies an interface.
NonCalculatedValue Marker interface that defines valid expression types for the right hand side of a data based filter.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.business.step.olap
ComparisonOperator Models the different types of common comparison operators that are used by relational and multi-dimensional databases.
ExpressionInterface Specifies an interface.
NonCalculatedValue Marker interface that defines valid expression types for the right hand side of a data based filter.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.expr
AbstractTimeValueExpression Specifies objects that implement the ExpressionInterface in order to store time-values that are based on the Greenwich Mean Time (GMT) time zone.
ComparisonOperator Models the different types of common comparison operators that are used by relational and multi-dimensional databases.
ConditionalExpression Specifies the abstract base class for all conditional expression classes.
ConditionalRelationType Contains the types of conditional relations (AND and OR) that are used to create compound objects such as `CompoundConditionalExpression` objects, `MultipleConditionalExpression` objects, and `CompoundFilter` objects.
DataItemContainerExpression Specifies ExpressionInterface classes that can (potentially) contain a data item as part of their expression.
ExpressionInterface Specifies an interface.
NonCalculatedValue Marker interface that defines valid expression types for the right hand side of a data based filter.
QueryMissingValues Contains all possible missing values that are supported by SAS in queries.
ResourceAwareStringExpression Specifies a "string form" of an expression that provides support for identifying certain resources within the string syntax.
ResourceIdentificationError Contains error information that is available from ResourceIdentificationException objects.
ResourceScope Enumeration Class which contains Resource scopes Resource scopes are used to determine what types of objects within a business model can be used in a ResourceAwareStringExpression(RASE).
StringExpression Models expressions that are not modeled in more detail by other classes.
StringExpressionUtil Generates the resource-aware ExpressionInterface from string text.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.expr.olap
ComparisonOperator Models the different types of common comparison operators that are used by relational and multi-dimensional databases.
ConditionalExpression Specifies the abstract base class for all conditional expression classes.
ExpressionInterface Specifies an interface.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.expr.relational
ComparisonOperator Models the different types of common comparison operators that are used by relational and multi-dimensional databases.
ConditionalExpression Specifies the abstract base class for all conditional expression classes.
ExpressionInterface Specifies an interface.
FunctionCall Models a call to a function that is specified by a given function definition and some, possibly empty, set of arguments that meets the requirements of a FunctionSignature that is associated with the given Function.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.metadata.serverprop
ExpressionInterface Specifies an interface.

Classes in com.sas.iquery.metadata.expr used by com.sas.iquery.util
ConstantExpression Specifies a constant value modeled as a string with an expression type.
ExpressionInterface Specifies an interface.

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