Package com.streambase.sb.operator.parameter

Class ResourceFilePropertyDescriptor

java.lang.Object

java.beans.FeatureDescriptor

java.beans.PropertyDescriptor

com.streambase.sb.operator.parameter.SBPropertyDescriptor

com.streambase.sb.operator.parameter.ResourceFilePropertyDescriptor

public class ResourceFilePropertyDescriptor
extends SBPropertyDescriptor

PropertyDescriptor for properties wishing to access external resources at runtime.

The Operator field should be of type String (representing a name/path usually to be looked up via the resource search path of the containing application).

The contents of the resource may be retrieved using Operator.getResourceContents(String), giving the value of the String field as the argument, or you may retrieve (if available) a File using Operator.getResourceFile(String)

Since:

6.5 added restrictFileHints(String[]) to improve user experience selecting a resource in Studio, 7.6.2 a ResourceFilePropertyDescriptor.TypeHint enumeration is provided to indicate to Studio the kind of selector to display

See Also:

• SBPropertyDescriptor

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ResourceFilePropertyDescriptor.TypeHint

Nested classes/interfaces inherited from class com.streambase.sb.operator.parameter.SBPropertyDescriptor

SBPropertyDescriptor.SingleValueSetter

Field Summary

Fields inherited from class com.streambase.sb.operator.parameter.SBPropertyDescriptor

_expressionInputPort, NOT_AN_EXPRESSION

Constructor Summary

Constructors

Constructor	Description
ResourceFilePropertyDescriptor(PropertyDescriptor pd, Class<?> beanClass)	Copy a property descriptor.
ResourceFilePropertyDescriptor(String propertyName, Class<?> beanClass)	Constructs a resource descriptor with standard read/write method names
ResourceFilePropertyDescriptor(String propertyName, Class<?> beanClass, String readMethodName, String writeMethodName)	Construct a resource descriptor with non-standard read/write method names.

Method Summary

Modifier and Type	Method	Description
ResourceFilePropertyDescriptor.TypeHint	getType()
ResourceFilePropertyDescriptor	restrictFileHints(String[] restrictions)	Sets restrictions on the Studio UI used to display a chooser to select a resource file.
ResourceFilePropertyDescriptor	typeHint(ResourceFilePropertyDescriptor.TypeHint type)

Methods inherited from class com.streambase.sb.operator.parameter.SBPropertyDescriptor

deprecated, description, displayName, getExpressionInputPort, getMaskDisplay, getMultiLine, getUIHints, isDeprecated, isExpression, isRequired, mask, multiline, optional, setDeprecated, setMaskStringDisplay, setMultiLine, setRequired, setUIHints

Methods inherited from class java.beans.PropertyDescriptor

createPropertyEditor, equals, getPropertyEditorClass, getPropertyType, getReadMethod, getWriteMethod, hashCode, isBound, isConstrained, setBound, setConstrained, setPropertyEditorClass, setReadMethod, setWriteMethod

Methods inherited from class java.beans.FeatureDescriptor

attributeNames, getDisplayName, getName, getShortDescription, getValue, isExpert, isHidden, isPreferred, setDisplayName, setExpert, setHidden, setName, setPreferred, setShortDescription, setValue, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

ResourceFilePropertyDescriptor

public ResourceFilePropertyDescriptor(String propertyName,
 Class<?> beanClass)
                               throws IntrospectionException

Constructs a resource descriptor with standard read/write method names

Parameters:

propertyName - the name of the property

beanClass - the operator class containing the property

Throws:

IntrospectionException - if introspection fails

See Also:

• ResourceFilePropertyDescriptor

ResourceFilePropertyDescriptor

public ResourceFilePropertyDescriptor(String propertyName,
 Class<?> beanClass,
 String readMethodName,
 String writeMethodName)
                               throws IntrospectionException

Construct a resource descriptor with non-standard read/write method names.

Parameters:

propertyName - the name of the property

beanClass - the operator class containing the property

readMethodName - the name of the method used to read the property

writeMethodName - the name of the method used to write the property

Throws:

IntrospectionException - if introspection fails

See Also:

• ResourceFilePropertyDescriptor

ResourceFilePropertyDescriptor

public ResourceFilePropertyDescriptor(PropertyDescriptor pd,
 Class<?> beanClass)
                               throws IntrospectionException

Copy a property descriptor.

Parameters:

pd - a property descriptor to copy from

beanClass - the operator class containing the property

Throws:

IntrospectionException - if introspection fails

See Also:

• ResourceFilePropertyDescriptor

Method Details

restrictFileHints

public ResourceFilePropertyDescriptor restrictFileHints(String[] restrictions)

Sets restrictions on the Studio UI used to display a chooser to select a resource file.

Note that this is a relaxed UI restriction, and does not prevent any value from being typed by the user, nor does it restrict resources the operator can access.

Two kinds of name restrictions are available:

• File extension restrictions must be provided as strings starting with a dot, e.g. .xml, and Studio will restrict the chooser to files ending in the provided extension, case insensitively.
• All other string restrictions are treated as complete file name restrictions, and Studio will restrict the chooser to files matching the name entirely and exactly, case insensitively.

A file will be allowed to display in the UI chooser when it matches any restriction.

Parameters:

restrictions - see method description, must not be null

Returns:

this resource file property descriptor for chaining

Since:

6.5

typeHint

public ResourceFilePropertyDescriptor typeHint(ResourceFilePropertyDescriptor.TypeHint type)

Parameters:

type - the new type hint for this descriptor

Returns:

this resource file property descriptor for chaining

Since:

7.6.2

See Also:

• ResourceFilePropertyDescriptor.TypeHint

getType

public ResourceFilePropertyDescriptor.TypeHint getType()

Returns:

the type of resource file this descriptor represents

Since:

7.6.2

See Also:

• ResourceFilePropertyDescriptor.TypeHint