java.lang.Object
- Ice.ObjectImpl
- - omero.grid.Param

All Implemented Interfaces:

Ice.Object, java.io.Serializable, java.lang.Cloneable
```
public class Param
extends Ice.ObjectImpl
```
A single parameter to a Job. For example, used by ScriptJobs to define what the input and output environment variables should be. Helper classes are available in the Python omero.scripts module, so that the following are equivalent:
```
# 1
 a = omero.grid.Params()
 a.optional = True
 a.prototype = omero.rtypes.rstring("")
 a.description = "An optional string which will be ignored by the script"
 omero.scripts.client(inputs = {"a":a})
 
```
```
# 2
 a = omero.scripts.String("a", optional=True, description=         * "An optional string which will be ignored by the script")
 omero.scripts.client(a)
 
```
For advanced setters not available on the Type classes (like omero.script.String) use the getter type.param() and then set values directly.
```
 a = omero.scripts.String("a")
 a.param().values = \["hi", "bye"]
 
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String[]`	`__ids`
`java.lang.String`	`description`	Usage documentation of this param for script users.
`java.lang.String`	`grouping`	Defines the grouping strategy for this `Param`.
`RType`	`max`	Maximum value which an input may contain.
`RType`	`min`	Minimum value which an input may contain.
`java.util.List<java.lang.String>`	`namespaces`	Defines machine readable interpretations for this parameter.
`boolean`	`optional`	Whether or not a script will require this value to be present in the input or output.
`RType`	`prototype`	`RType` which represents what the input or output value should look like.
`static long`	`serialVersionUID`
`boolean`	`useDefault`	Whether or not the prototype should be used as a default.
`RList`	`values`	An enumeration of acceptable values which can be used for this parameter.

Fields inherited from interface Ice.Object
ice_staticId

Constructor Summary

Constructors
Constructor	Description
`Param()`
`Param(java.lang.String description, boolean optional, boolean useDefault, RType prototype, RType min, RType max, RList values, java.lang.String grouping, java.util.List<java.lang.String> namespaces)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`__readImpl(IceInternal.BasicStream __is)`
`protected void`	`__writeImpl(IceInternal.BasicStream __os)`
`Param`	`clone()`
`static Ice.ObjectFactory`	`ice_factory()`
`java.lang.String`	`ice_id()`
`java.lang.String`	`ice_id(Ice.Current __current)`
`java.lang.String[]`	`ice_ids()`
`java.lang.String[]`	`ice_ids(Ice.Current __current)`
`boolean`	`ice_isA(java.lang.String s)`
`boolean`	`ice_isA(java.lang.String s, Ice.Current __current)`
`static java.lang.String`	`ice_staticId()`

Methods inherited from class Ice.ObjectImpl
___ice_id, ___ice_ids, ___ice_isA, ___ice_ping, __checkMode, __dispatch, __read, __read, __readImpl, __write, __write, __writeImpl, ice_dispatch, ice_dispatch, ice_operationAttributes, ice_ping, ice_ping, ice_postUnmarshal, ice_preMarshal

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - __ids
```
public static final java.lang.String[] __ids
```
  - description
```
public java.lang.String description
```
    Usage documentation of this param for script users. Example of a bad description: ""a long value"" Example of a good description: ""long representing the number of bins to be used by . A sensible value would be between 16 and 32""
  - optional
```
public boolean optional
```
    Whether or not a script will require this value to be present in the input or output. If an input is missing or None when non-optional, then a ValidationException will be thrown on processJob. A missing output param will be marked after execution.
  - useDefault
```
public boolean useDefault
```
    Whether or not the prototype should be used as a default. If true, then if the value is missing from the input OR output values, the prototype will be substituted.
    param = ...; inputs = ...; if name in inputs: value = inputs\[name] elif param.inputs\[name].useDefault: value = param.inputs\[name].prototype
  - prototype
```
public RType prototype
```
    RType which represents what the input or output value should look like. If this is a collection type (i.e. RCollection or RMap or their subclasses), then the first contents of the collection will be used (recursively).
    param.prototype = rlist(rlist(rstring)))
    requires that a list of list of strings be passed.
  - min
```
public RType min
```
    Minimum value which an input may contain. If the prototype is a collection type, then the min type must match the type of the innermost non-collection instance. For example,
    param.prototype = rlong(0) param.min = rlong(-5)
    but
    param.prototype = rlist(rlong(0)) param.min = rlong(-5)
  - max
```
public RType max
```
    Maximum value which an input may contain. If the prototype is a collection type, then the max type must match the type of the innermost non-collection instance. For example,
    param.prototype = rlong(0) param.max = rlong(5)
    but
    param.prototype = rlist(rlong(0)) param.max = rlong(5)
  - values
```
public RList values
```
    An enumeration of acceptable values which can be used for this parameter. If min and max are set, this value will be ignored. If prototype is an RCollection or RMap instance, then the values in this RList will be of the member types of the collection or map, and not a collection or map instance.
  - grouping
```
public java.lang.String grouping
```
    Defines the grouping strategy for this Param.
    A set of Param objects in a single JobParams can use dot notation to specify that they belong together, and in which order they should be presented to the user.
    
    inputs = {"a" : Param(..., grouping = "1.1"), "b" : Param(..., grouping = "1.2"), "c" : Param(..., grouping = "2.2"), "d" : Param(..., grouping = "2.1")}
    defines two groups of parameters which might be display to the user so:
    Group 1: Group 2: +-----------------------+ +-----------------------+ | a: | | d: | +-----------------------+ +-----------------------+ | b: | | c: | +-----------------------+ +-----------------------+
    
    Further dots (e.g. "1.2.3.5") can be used to specify deeper trees of parameters.
    
    By most clients, Params missing grouping values (e.g. "") will be ordered after params with grouping values.
    
    A group which has a boolean as the top-level object can be thought of as a checkbox which turns on or off all of the other group members. For example,
    
    inputs = {"Image_Ids" : Param(prototype=rlist(), grouping = "1"), "Scale_Bar" : Param(prototype=rbool(), grouping = "2"), "Color" : Param(prototype=rinternal(Color()), grouping = "2.1"), "Size" : Param(prototype=rlong(), grouping = "2.2")}
    
    might be displayed as:
    
    Scale Bar: \[ on/off ] ====================== Color: \[rgb] Size: \[ 10]
  - namespaces
```
public java.util.List<java.lang.String> namespaces
```
    Defines machine readable interpretations for this parameter.
    Where the description field should provide information for users, the assigned namespaces can define how clients may interpret the param.
    
    omero.constants.namespaces.NSDOWNLOAD, for example, indicates that users may want to download the resulting file. The prototype of the Param should be one of: OriginalFile, FileAnnotation, or an annotation link (like ImageAnnotationLink) which points to a file annotation.
  - serialVersionUID
```
public static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Param
```
public Param()
```
  - Param
```
public Param(java.lang.String description,
             boolean optional,
             boolean useDefault,
             RType prototype,
             RType min,
             RType max,
             RList values,
             java.lang.String grouping,
             java.util.List<java.lang.String> namespaces)
```
- Method Detail
  - ice_factory
```
public static Ice.ObjectFactory ice_factory()
```
  - ice_isA
```
public boolean ice_isA(java.lang.String s)
```
    Specified by:
    
    ice_isA in interface Ice.Object
    
    Overrides:
    
    ice_isA in class Ice.ObjectImpl
  - ice_isA
```
public boolean ice_isA(java.lang.String s,
                       Ice.Current __current)
```
    Specified by:
    
    ice_isA in interface Ice.Object
    
    Overrides:
    
    ice_isA in class Ice.ObjectImpl
  - ice_ids
```
public java.lang.String[] ice_ids()
```
    Specified by:
    
    ice_ids in interface Ice.Object
    
    Overrides:
    
    ice_ids in class Ice.ObjectImpl
  - ice_ids
```
public java.lang.String[] ice_ids(Ice.Current __current)
```
    Specified by:
    
    ice_ids in interface Ice.Object
    
    Overrides:
    
    ice_ids in class Ice.ObjectImpl
  - ice_id
```
public java.lang.String ice_id()
```
    Specified by:
    
    ice_id in interface Ice.Object
    
    Overrides:
    
    ice_id in class Ice.ObjectImpl
  - ice_id
```
public java.lang.String ice_id(Ice.Current __current)
```
    Specified by:
    
    ice_id in interface Ice.Object
    
    Overrides:
    
    ice_id in class Ice.ObjectImpl
  - ice_staticId
```
public static java.lang.String ice_staticId()
```
  - __writeImpl
```
protected void __writeImpl(IceInternal.BasicStream __os)
```
    Overrides:
    
    __writeImpl in class Ice.ObjectImpl
  - __readImpl
```
protected void __readImpl(IceInternal.BasicStream __is)
```
    Overrides:
    
    __readImpl in class Ice.ObjectImpl
  - clone
```
public Param clone()
```
    Specified by:
    
    clone in interface Ice.Object
    
    Overrides:
    
    clone in class Ice.ObjectImpl

Class Param

Field Summary

Fields inherited from interface Ice.Object

Constructor Summary

Method Summary

Methods inherited from class Ice.ObjectImpl

Methods inherited from class java.lang.Object

Field Detail

__ids

description

optional

useDefault

prototype

min

max

values

grouping

namespaces

serialVersionUID

Constructor Detail

Param

Param

Method Detail

ice_factory

ice_isA

ice_isA

ice_ids

ice_ids

ice_id

ice_id

ice_staticId

__writeImpl

__readImpl

clone