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## cascading.tuple
Class TupleEntry

    java.lang.Object
      cascading.tuple.TupleEntry

    public class TupleEntry

extends Object

Class TupleEntry allows a `Tuple` instance and its declaring `Fields` instance to be used as a single object.

Once a TupleEntry is created, its Fields cannot be changed, but the Tuple instance it holds can be replaced or modified. The managed Tuple should not have elements added or removed, as this will break the relationship with the associated Fields instance.

If type information is provided on the Fields instance, all setters on this class will use that information to coerce the given object to the expected type.

For example, if position is is of type `long`, then `entry.setString(0, "9" )` will coerce the "9" to a long `9`. Thus, `entry.getObject(0) == 9l`.

No coercion is performed with the `getObject(Comparable)` and `getObject(int)` methods.

To set a value without coercion, see the `setRaw(Comparable, Object)` and `setRaw(int, Object)` methods.

See Also:
  `Fields`, `Tuple`

Field Summary
`static TupleEntry` | `NULL` An EMPTY TupleEntry instance for use as a stand in instead of a `null`.

Constructor Summary
`TupleEntry()` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(boolean isUnmodifiable)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(Fields fields)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(Fields fields, boolean isUnmodifiable)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(Fields fields, Tuple tuple)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(Fields fields, Tuple tuple, boolean isUnmodifiable)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(Tuple tuple)` Constructor TupleEntry creates a new TupleEntry instance.
`TupleEntry(TupleEntry tupleEntry)` Constructor TupleEntry creates a new TupleEntry instance that is a safe copy of the given tupleEntry.

Method Summary
`TupleEntry` | `appendNew(TupleEntry entry)` Method appendNew appends the given TupleEntry instance to this instance.
`
`<T> Iterable<T>`
` | `asIterableOf(Class<T> type)` Method asIterableOf returns an `Iterable` instance that will coerce all Tuple elements into the given `type` parameter.
`boolean` | `equals(Object object)`
`Comparable` | `get(Comparable fieldName)` Deprecated.
`Comparable` | `get(int pos)` Deprecated.
`boolean` | `getBoolean(Comparable fieldName)` Method getBoolean returns the element for the given field name or position as a boolean.
`Tuple` | `getCoercedTuple(Type[] types)` Method getCoercedTuple is a helper method for copying the current tuple elements into a new Tuple, of the same size, as the requested coerced types.
`Tuple` | `getCoercedTuple(Type[] types, Tuple into)` Method getCoercedTuple is a helper method for copying the current tuple elements into the new Tuple, of the same size, as the requested coerced types.
`double` | `getDouble(Comparable fieldName)` Method getDouble returns the element for the given field name or position as a double.
`Fields` | `getFields()` Method getFields returns the fields of this TupleEntry object.
`float` | `getFloat(Comparable fieldName)` Method getFloat returns the element for the given field name or position as a float.
`int` | `getInteger(Comparable fieldName)` Method getInteger returns the element for the given field name or position as an int.
`long` | `getLong(Comparable fieldName)` Method getLong returns the element for the given field name or position as a long.
`Object` | `getObject(Comparable fieldName)` Method getObject returns the value in the given field or position.
`Object` | `getObject(Comparable fieldName, Type type)` Method getObject returns the value in the given field or position as the requested type.
`Object` | `getObject(int pos)` Method getObject returns the value in the given position pos.
`Object` | `getObject(int pos, Type type)` Method getObject returns the value in the given field or position as the requested type.
`short` | `getShort(Comparable fieldName)` Method getShort returns the element for the given field name or position as a short.
`String` | `getString(Comparable fieldName)` Method getString returns the element for the given field name or position as a String.
`Tuple` | `getTuple()` Method getTuple returns the tuple of this TupleEntry object.
`Tuple` | `getTupleCopy()` Method getTupleCopy returns a copy of the tuple of this TupleEntry object.
`int` | `hashCode()`
`boolean` | `hasTypes()` Returns true if there are types associated with this instance.
`boolean` | `isUnmodifiable()` Method isUnmodifiable returns true if this TupleEntry is unmodifiable.
`static Tuple` | `select(Fields selector, TupleEntry... entries)` Method select will select a new Tuple instance from the given set of entries.
`TupleEntry` | `selectEntry(Fields selector)` Method selectEntry selects the fields specified in the selector from this instance.
`TupleEntry` | `selectEntryCopy(Fields selector)` Method selectEntry selects the fields specified in selector from this instance.
`Tuple` | `selectInto(Fields selector, Tuple tuple)` Method selectInto selects the fields specified in the selector from this instance and copies them into the given tuple argument.
`Tuple` | `selectTuple(Fields selector)` Method selectTuple selects the fields specified in the selector from this instance.
`Tuple` | `selectTupleCopy(Fields selector)` Method selectTupleCopy selects the fields specified in selector from this instance.
`void` | `set(Comparable fieldName, Object value)` Deprecated.
`void` | `set(TupleEntry tupleEntry)` Method set sets the values from the given tupleEntry into this TupleEntry instance based on the given tupleEntry field names.
`void` | `setBoolean(Comparable fieldName, boolean value)` Method setBoolean sets the value in the given field or position.
`void` | `setCanonicalTuple(Tuple tuple)` Method setCanonicalTuple replaces each value of the current tuple with the given tuple elements after they are coerced.
`void` | `setDouble(Comparable fieldName, double value)` Method setDouble sets the value in the given field or position.
`void` | `setFloat(Comparable fieldName, float value)` Method setFloat sets the value in the given field or position.
`void` | `setInteger(Comparable fieldName, int value)` Method setInteger sets the value in the given field or position.
`void` | `setLong(Comparable fieldName, long value)` Method setLong sets the value in the given field or position.
`void` | `setObject(Comparable fieldName, Object value)` Method set sets the value in the given field or position.
`void` | `setRaw(Comparable fieldName, Object value)` Method set sets the value in the given field or position.
`void` | `setRaw(int pos, Object value)` Method set sets the value in the given position.
`void` | `setShort(Comparable fieldName, short value)` Method setShort sets the value in the given field or position.
`void` | `setString(Comparable fieldName, String value)` Method setString sets the value in the given field or position.
`void` | `setTuple(Fields selector, Tuple tuple)` Method setTuple sets the values specified by the selector to the values given by the given tuple, the given values will always be copied into this TupleEntry.
`void` | `setTuple(Tuple tuple)` Method setTuple sets the tuple of this TupleEntry object, no copy will be performed.
`int` | `size()` Method size returns the number of values in this instance.
`String` | `toString()`

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

Field Detail

### NULL

    public static final TupleEntry NULL

  An EMPTY TupleEntry instance for use as a stand in instead of a `null`.

Constructor Detail

### TupleEntry

    public TupleEntry()

  Constructor TupleEntry creates a new TupleEntry instance.

### TupleEntry

    @ConstructorProperties(value="isUnmodifiable")
    public TupleEntry(boolean isUnmodifiable)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `isUnmodifiable` - of type boolean

### TupleEntry

    @ConstructorProperties(value="fields")
    public TupleEntry(Fields fields)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `fields` - of type Fields

### TupleEntry

    @ConstructorProperties(value={"fields","isUnmodifiable"})
    public TupleEntry(Fields fields,
                                                 boolean isUnmodifiable)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `fields` - of type Fields
    `isUnmodifiable` - of type boolean

### TupleEntry

    @ConstructorProperties(value={"fields","tuple","isUnmodifiable"})
    public TupleEntry(Fields fields,
                                                 Tuple tuple,
                                                 boolean isUnmodifiable)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `fields` - of type Fields
    `tuple` - of type Tuple
    `isUnmodifiable` - of type boolean

### TupleEntry

    @ConstructorProperties(value={"fields","tuple"})
    public TupleEntry(Fields fields,
                                                 Tuple tuple)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `fields` - of type Fields
    `tuple` - of type Tuple

### TupleEntry

    @ConstructorProperties(value="tupleEntry")
    public TupleEntry(TupleEntry tupleEntry)

  Constructor TupleEntry creates a new TupleEntry instance that is a safe copy of the given tupleEntry.

  The new instance is safe to cache and will be modifiable regardless of the given tupleEntry state.

  Parameters:
    `tupleEntry` - of type TupleEntry

### TupleEntry

    @ConstructorProperties(value="tuple")
    public TupleEntry(Tuple tuple)

  Constructor TupleEntry creates a new TupleEntry instance.

  Parameters:
    `tuple` - of type Tuple

Method Detail

### select

    public static Tuple select(Fields selector,
                               TupleEntry... entries)

  Method select will select a new Tuple instance from the given set of entries. Entries order is significant to the selector.

  Parameters:
    `selector` - of type Fields
    `entries` - of type TupleEntry
  Returns:
    Tuple

### isUnmodifiable

    public boolean isUnmodifiable()

  Method isUnmodifiable returns true if this TupleEntry is unmodifiable.

  Returns:
    boolean

### getFields

    public Fields getFields()

  Method getFields returns the fields of this TupleEntry object.

  Returns:
    the fields (type Fields) of this TupleEntry object.

### hasTypes

    public boolean hasTypes()

  Returns true if there are types associated with this instance.

  Returns:
    boolean

### getTuple

    public Tuple getTuple()

  Method getTuple returns the tuple of this TupleEntry object.

  Returns:
    the tuple (type Tuple) of this TupleEntry object.

### getTupleCopy

    public Tuple getTupleCopy()

  Method getTupleCopy returns a copy of the tuple of this TupleEntry object.

  Returns:
    a copy of the tuple (type Tuple) of this TupleEntry object.

### getCoercedTuple

    public Tuple getCoercedTuple(Type[] types)

  Method getCoercedTuple is a helper method for copying the current tuple elements into a new Tuple, of the same size, as the requested coerced types.

  Parameters:
    `types` - of type Type[]
  Returns:
    returns the a new Tuple instance with coerced values

### getCoercedTuple

    public Tuple getCoercedTuple(Type[] types,
                                 Tuple into)

  Method getCoercedTuple is a helper method for copying the current tuple elements into the new Tuple, of the same size, as the requested coerced types.

  Parameters:
    `types` - of type Type[]
    `into` - of type Tuple
  Returns:
    returns the given into Tuple instance with coerced values

### setTuple

    public void setTuple(Tuple tuple)

  Method setTuple sets the tuple of this TupleEntry object, no copy will be performed.

  If the given tuple is "unmodifiable" (`Tuple.isUnmodifiable() == true`) and this TupleEntry is not "unmodifiable", a warning will be issued.

  Unmodifiable tuples are generally owned by the system and cannot be be changed and must not be cached.

  Parameters:
    `tuple` - the tuple of this TupleEntry object.

### setCanonicalTuple

    public void setCanonicalTuple(Tuple tuple)

  Method setCanonicalTuple replaces each value of the current tuple with the given tuple elements after they are coerced.

  This method will modify the existing Tuple wrapped by this TupleEntry instance even if it is marked as unmodifiable.

  Parameters:
    `tuple` - to replace the current wrapped Tuple instance

### size

    public int size()

  Method size returns the number of values in this instance.

  Returns:
    int

### get

    @Deprecated
    public Comparable get(int pos)

  Deprecated.

  Method get returns the value in the given position pos.

  This method is deprecated, use `getObject(int)` instead.

  Parameters:
    `pos` - position of the element to return.
  Returns:
    Comparable

### getObject

    public Object getObject(int pos)

  Method getObject returns the value in the given position pos.

  No coercion is performed if there is an associated coercible type.

  Parameters:
    `pos` - position of the element to return.
  Returns:
    Object

### getObject

    public Object getObject(int pos,
                            Type type)

  Method getObject returns the value in the given field or position as the requested type.

  Coercion is performed to the given type.

  Parameters:
    `pos` - position of the element to return.
  Returns:
    Object

### get

    @Deprecated
    public Comparable get(Comparable fieldName)

  Deprecated.

  Method get returns the value in the given field or position.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  This method is deprecated, use `getObject(Comparable)` instead.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    Comparable

### getObject

    public Object getObject(Comparable fieldName)

  Method getObject returns the value in the given field or position.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  No coercion is performed if there is an associated coercible type.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    Comparable

### getObject

    public Object getObject(Comparable fieldName,
                            Type type)

  Method getObject returns the value in the given field or position as the requested type.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Coercion is performed to the given type.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    Comparable

### set

    @Deprecated
    public void set(Comparable fieldName,
                               Object value)

  Deprecated.

  Method set sets the value in the given field or position.

  This method is deprecated in favor of `setRaw(Comparable, Object)`

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type Comparable

### setRaw

    public void setRaw(int pos,
                       Object value)

  Method set sets the value in the given position.

  No coercion is performed if there is an associated coercible type.

  Parameters:
    `pos` - position to set
    `value` - of type Comparable

### setRaw

    public void setRaw(Comparable fieldName,
                       Object value)

  Method set sets the value in the given field or position.

  No coercion is performed if there is an associated coercible type.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type Comparable

### setObject

    public void setObject(Comparable fieldName,
                          Object value)

  Method set sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type Comparable

### setBoolean

    public void setBoolean(Comparable fieldName,
                           boolean value)

  Method setBoolean sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type boolean

### setShort

    public void setShort(Comparable fieldName,
                         short value)

  Method setShort sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type short

### setInteger

    public void setInteger(Comparable fieldName,
                           int value)

  Method setInteger sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type int

### setLong

    public void setLong(Comparable fieldName,
                        long value)

  Method setLong sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type long

### setFloat

    public void setFloat(Comparable fieldName,
                         float value)

  Method setFloat sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type float

### setDouble

    public void setDouble(Comparable fieldName,
                          double value)

  Method setDouble sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type double

### setString

    public void setString(Comparable fieldName,
                          String value)

  Method setString sets the value in the given field or position.

  Parameters:
    `fieldName` - field name or position to set
    `value` - of type String

### getString

    public String getString(Comparable fieldName)

  Method getString returns the element for the given field name or position as a String.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    String

### getFloat

    public float getFloat(Comparable fieldName)

  Method getFloat returns the element for the given field name or position as a float. Zero if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    float

### getDouble

    public double getDouble(Comparable fieldName)

  Method getDouble returns the element for the given field name or position as a double. Zero if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    double

### getInteger

    public int getInteger(Comparable fieldName)

  Method getInteger returns the element for the given field name or position as an int. Zero if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    int

### getLong

    public long getLong(Comparable fieldName)

  Method getLong returns the element for the given field name or position as a long. Zero if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    long

### getShort

    public short getShort(Comparable fieldName)

  Method getShort returns the element for the given field name or position as a short. Zero if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    short

### getBoolean

    public boolean getBoolean(Comparable fieldName)

  Method getBoolean returns the element for the given field name or position as a boolean. If the value is (case ignored) the string 'true', a `true` value will be returned. `false` if null.
  `fieldName` may optionally be a `Fields` instance. Only the first field name or position will be considered.

  Parameters:
    `fieldName` - field name or position to return
  Returns:
    boolean

### selectEntry

    public TupleEntry selectEntry(Fields selector)

  Method selectEntry selects the fields specified in the selector from this instance. If `Fields.ALL` or the same fields as declared are given, `this` will be returned.

  The returned TupleEntry will be either modifiable or unmodifiable, depending on the state of this TupleEntry instance.

  See `selectEntryCopy(Fields)` to guarantee a copy suitable for modifying or caching/storing in a collection.

  Note this is a bug fix and change from 2.0 and 2.1. In previous versions the modifiable state was dependent on the given selector.

  Parameters:
    `selector` - Fields selector that selects the values to return
  Returns:
    TupleEntry

### selectEntryCopy

    public TupleEntry selectEntryCopy(Fields selector)

  Method selectEntry selects the fields specified in selector from this instance.

  It is guaranteed to return a new modifiable TupleEntry instance at a cost of copying data.

  The returned instance is safe to cache.

  Parameters:
    `selector` - Fields selector that selects the values to return
  Returns:
    TupleEntry

### selectTuple

    public Tuple selectTuple(Fields selector)

  Method selectTuple selects the fields specified in the selector from this instance. If `Fields.ALL` or the same fields as declared are given, `this.getTuple()` will be returned.

  The returned Tuple will be either modifiable or unmodifiable, depending on the state of this TupleEntry instance.

  See `selectTupleCopy(Fields)` to guarantee a copy suitable for modifying or caching/storing in a collection.

  Note this is a bug fix and change from 2.0 and 2.1. In previous versions the modifiable state was dependent on the given selector.

  Parameters:
    `selector` - Fields selector that selects the values to return
  Returns:
    Tuple

### selectTupleCopy

    public Tuple selectTupleCopy(Fields selector)

  Method selectTupleCopy selects the fields specified in selector from this instance.

  It is guaranteed to return a new modifiable Tuple instance at a cost of copying data.

  The returned instance is safe to cache.

  Parameters:
    `selector` - Fields selector that selects the values to return
  Returns:
    Tuple

### selectInto

    public Tuple selectInto(Fields selector,
                            Tuple tuple)

  Method selectInto selects the fields specified in the selector from this instance and copies them into the given tuple argument.

  Parameters:
    `selector` - of type Fields
    `tuple` - of type Tuple
  Returns:
    returns the given tuple argument with new values added

### setTuple

    public void setTuple(Fields selector,
                         Tuple tuple)

  Method setTuple sets the values specified by the selector to the values given by the given tuple, the given values will always be copied into this TupleEntry.

  Parameters:
    `selector` - of type Fields
    `tuple` - of type Tuple

### set

    public void set(TupleEntry tupleEntry)

  Method set sets the values from the given tupleEntry into this TupleEntry instance based on the given tupleEntry field names.

  If type information is given, each incoming value will be coerced from its canonical type to the given types.

  Parameters:
    `tupleEntry` - of type TupleEntry

### appendNew

    public TupleEntry appendNew(TupleEntry entry)

  Method appendNew appends the given TupleEntry instance to this instance.

  Parameters:
    `entry` - of type TupleEntry
  Returns:
    TupleEntry

### equals

    public boolean equals(Object object)

  Overrides:
    `equals` in class `Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

### asIterableOf

    public <T> Iterable<T> asIterableOf(Class<T> type)

  Method asIterableOf returns an `Iterable` instance that will coerce all Tuple elements into the given `type` parameter.

  This method honors any `CoercibleType` instances on the internal Fields instance for the specified Tuple element.

  Parameters:
    `type` - of type Class
  Returns:
    an Iterable

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