Class FixedLeafBuilder

java.lang.Object

io.crums.util.mrkl.Builder

io.crums.util.mrkl.FixedLeafBuilder

Direct Known Subclasses:

DeltaBuilder

public class FixedLeafBuilder
extends Builder

Builds FixedLeafTree instances.

Field Summary

Fields inherited from class io.crums.util.mrkl.Builder

copyOnWrite, data, digest, lock

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FixedLeafBuilder(FixedLeafBuilder copy)
	FixedLeafBuilder(String algo)
	FixedLeafBuilder(String algo, boolean copyOnWrite)
	FixedLeafBuilder(String algo, int leafWidth)
	FixedLeafBuilder(String algo, int leafWidth, boolean copyOnWrite)

Method Summary

Modifier and Type	Method	Description
int	add(byte[] item, int off, int len)	Adds the specified item as the next leaf node are returns its leaf index.
Tree	build()	Builds and returns the tree.
int	leafWidth()	Returns the leaf width if fixed; -1 if variable; -2 if not set.
protected Tree	packageTree()

Methods inherited from class io.crums.util.mrkl.Builder

add, clear, completeTree, count, getHashAlgo, hash, hashWidth, item, level, levelSize, newByteArrayList

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FixedLeafBuilder

public FixedLeafBuilder(String algo)

Parameters:

algo -

Throws:

IllegalArgumentException

FixedLeafBuilder

public FixedLeafBuilder(String algo,
 int leafWidth)
                 throws IllegalArgumentException

Parameters:

algo -

Throws:

IllegalArgumentException

FixedLeafBuilder

public FixedLeafBuilder(String algo,
 int leafWidth,
 boolean copyOnWrite)
                 throws IllegalArgumentException

Parameters:

algo -

copyOnWrite -

Throws:

IllegalArgumentException

FixedLeafBuilder

public FixedLeafBuilder(String algo,
 boolean copyOnWrite)
                 throws IllegalArgumentException

Parameters:

algo -

copyOnWrite -

Throws:

IllegalArgumentException

FixedLeafBuilder

protected FixedLeafBuilder(FixedLeafBuilder copy)

Method Details

leafWidth

public int leafWidth()

Description copied from class: Builder

Returns the leaf width if fixed; -1 if variable; -2 if not set.

Overrides:

leafWidth in class Builder

Returns:

≥ -2

add

public int add(byte[] item,
 int off,
 int len)
        throws IllegalArgumentException,
IndexOutOfBoundsException

Description copied from class: Builder

Adds the specified item as the next leaf node are returns its leaf index.

Overrides:

add in class Builder

Parameters:

item - the item's data (copied)

off - starting offset into item

len - = leafWidth()

Returns:

the item's leaf node index in the to-be built tree

Throws:

IllegalArgumentException - if len ≠ leafWidth()

IndexOutOfBoundsException

build

public Tree build()

Description copied from class: Builder

Builds and returns the tree. On return the builder is cleared.

Overrides:

build in class Builder

See Also:

• Builder.clear()

packageTree

protected Tree packageTree()

Overrides:

packageTree in class Builder