Projection (Hydra Java API)

java.lang.Object
- hydra.core.Projection

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Projection>
```
public class Projection
extends java.lang.Object
implements java.io.Serializable, java.lang.Comparable<Projection>
```
A record elimination; a projection

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static Name`	`FIELD_NAME`	Name of the `hydra.core.Projection.fieldName` field.
`Name`	`fieldName`	The name of the projected field
`static Name`	`TYPE_`	Name of the `hydra.core.Projection` type.
`static Name`	`TYPE_NAME`	Name of the `hydra.core.Projection.typeName` field.
`Name`	`typeName`	The name of the record type

Constructor Summary

Constructors
Constructor Description

Projection(Name typeName, Name fieldName)
Constructs an immutable Projection.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compareTo(Projection other)`
`boolean`	`equals(java.lang.Object other)`
`int`	`hashCode()`
`Projection`	`withFieldName(Name fieldName)`	Returns a copy of this `Projection` with `fieldName` replaced.
`Projection`	`withTypeName(Name typeName)`	Returns a copy of this `Projection` with `typeName` replaced.

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

- Field Detail
  - TYPE_
```
public static final Name TYPE_
```
    Name of the hydra.core.Projection type.
  - TYPE_NAME
```
public static final Name TYPE_NAME
```
    Name of the hydra.core.Projection.typeName field.
  - FIELD_NAME
```
public static final Name FIELD_NAME
```
    Name of the hydra.core.Projection.fieldName field.
  - typeName
```
public final Name typeName
```
    The name of the record type
  - fieldName
```
public final Name fieldName
```
    The name of the projected field
- Constructor Detail
  - Projection
```
public Projection(Name typeName,
                  Name fieldName)
```
    Constructs an immutable Projection.
    
    Parameters:
    
    typeName - The name of the record type
    
    fieldName - The name of the projected field
- Method Detail
  - equals
```
public boolean equals(java.lang.Object other)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - compareTo
```
public int compareTo(Projection other)
```
    Specified by:
    
    compareTo in interface java.lang.Comparable<Projection>
  - withTypeName
```
public Projection withTypeName(Name typeName)
```
    Returns a copy of this Projection with typeName replaced.
  - withFieldName
```
public Projection withFieldName(Name fieldName)
```
    Returns a copy of this Projection with fieldName replaced.