goodslib
Class ArrayOfFloat

java.lang.Object
  extended bygoodsjpi.Persistent
      extended bygoodslib.AnyArray
          extended bygoodslib.ArrayOfFloat
All Implemented Interfaces:
java.io.Serializable

public class ArrayOfFloat
extends AnyArray

ArrayOfFloat is just that, an array of floats. It is fully persistent, as it it's derived from Persistent. All reads cause a fetch of the data, all writes mark it dirty and to be saved.

See Also:
Serialized Form

Field Summary
protected  float[] array
          array holds the floats in an []
 
Fields inherited from class goodslib.AnyArray
used
 
Fields inherited from class goodsjpi.Persistent
defaultMetaobject, metaobject
 
Constructor Summary
ArrayOfFloat(float[] src)
          Creates a new ArrayOfFloat instance, as a copy of the given float[]
ArrayOfFloat(int size)
          Creates a new ArrayOfFloat instance.
ArrayOfFloat(int size, int allocatedSize)
          Creates a new ArrayOfFloat instance.
 
Method Summary
 void append(float[] tail)
          append add the given values to the end of the array
 void changeSize(int newSize)
          Resize the amount of space taken by the array.
 void copy(int dstIndex, float[] src, int srcIndex, int count)
          copy into this array from a destination, a given amount of values.
 float getAt(int index)
          Get a float at the specified index
 int indexOf(float val)
          indexOf returns the first occurrence of val
 void insert(int index, int count, float value)
          insert a "count" amount of values at a given index.
 int lastIndexOf(float val)
          Find the lastIndexOf a given value
 float pop()
          Use the array as a stack and pop a value.
 void push(float value)
          Use the array as a stack with the push method.
 void putAt(int index, float value)
          Put a float value at a given index
 void remove(int index, int count)
          remove a number of values.
 float[] toArray()
          toArray converts the internal representation to a float[] , of correct size.
 float top()
          Check the top boolean with the top method.
 
Methods inherited from class goodslib.AnyArray
length
 
Methods inherited from class goodsjpi.Persistent
attachToStorage, clone, clusterWith, finalize, getDatabase, getOid, getStorageId, hashCode, onLoad
 
Methods inherited from class java.lang.Object
equals, getClass, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

array

protected float[] array
array holds the floats in an []

Constructor Detail

ArrayOfFloat

public ArrayOfFloat(int size)
Creates a new ArrayOfFloat instance.

Parameters:
size - is the initial size, (length)

ArrayOfFloat

public ArrayOfFloat(int size,
                    int allocatedSize)
Creates a new ArrayOfFloat instance. (Full of false)

Parameters:
size - , or length of the array
allocatedSize - is the size it can grow to without re-sizing

ArrayOfFloat

public ArrayOfFloat(float[] src)
Creates a new ArrayOfFloat instance, as a copy of the given float[]

Parameters:
src - a float[] that will be copied
Method Detail

putAt

public void putAt(int index,
                  float value)
Put a float value at a given index

Parameters:
index - an int value, where the value should be set
value - the float value to be set

getAt

public float getAt(int index)
Get a float at the specified index

Parameters:
index - of the float you want
Returns:
a float value, at index "index"

changeSize

public void changeSize(int newSize)
Resize the amount of space taken by the array. Either grow or shrink as necessary. You get an IndexOutOfBoundException for negative values.
of course the old data is copied.

Parameters:
newSize - an int denoting the new size.

insert

public void insert(int index,
                   int count,
                   float value)
insert a "count" amount of values at a given index. Throws an IndexOutOfBoundsException for too small (<0) or too big (>length) count or index.

Parameters:
index - , where to start inserting value(s)
count - , how many values to insert
value - a float value to insert

remove

public void remove(int index,
                   int count)
remove a number of values. The array shrinks in it's length, but no resizing is done. Get an IndexOutOfBoundsException for inappropriate index or count values.

Parameters:
index - , where to start removing
count - , how many values to remove

push

public void push(float value)
Use the array as a stack with the push method.

Parameters:
value - , a float to push to the stack

pop

public float pop()
Use the array as a stack and pop a value. (Value is removed) IndexOutOfBoundsExceptions comes when array has hit 0 length.

Returns:
the top most float value

top

public float top()
Check the top boolean with the top method. This returns what pop returns, just it doesn't remove the value. In other stack implementations it may be called peek()

Returns:
a float value

append

public void append(float[] tail)
append add the given values to the end of the array

Parameters:
tail - a float[] that will be appended

toArray

public float[] toArray()
toArray converts the internal representation to a float[] , of correct size. Ie: the .length of the return == this.size()

Returns:
a float[] value

copy

public void copy(int dstIndex,
                 float[] src,
                 int srcIndex,
                 int count)
copy into this array from a destination, a given amount of values. Get a IndexOutOfBounds if the src or count don't fit

Parameters:
dstIndex - , the index (of this array) where to copy to
src - a float[] , where to copy from
srcIndex - an int , where to start copying from
count - an int , how many values to copy

indexOf

public int indexOf(float val)
indexOf returns the first occurrence of val

Parameters:
val - a float to be looked for
Returns:
an int, where the value was found, or -1

lastIndexOf

public int lastIndexOf(float val)
Find the lastIndexOf a given value

Parameters:
val - a float value to be found (from the back)
Returns:
an int , where the value was found, or -1