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java.lang.Object | +--com.icl.saxon.sort.BinaryTree
A Binary Tree used for sorting. Similar to the java.util.Dictionary interface except (a) that the keys must be Strings rather than general Objects (b) the results are returned as a Vector, not an Enumeration.
The methods getKeys() and getValues() return values in ascending order of key. The keys are compared using a default Collator which sorts in alphabetical order with intelligent handling of case and accents.
Note that duplicate keys are not allowed: a new entry silently overwrites any previous entry with the same key. If you want to use dulicate keys, append a unique value (for example, a random number) to each one.
Constructor Summary | |
BinaryTree()
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Method Summary | |
java.lang.Object |
get(java.lang.Object key)
get(String) returns the value corresponding to a given key, if any |
java.util.Vector |
getKeys()
getKeys() returns the keys in the tree in sorted order. |
java.util.Vector |
getValues()
getValues() returns the values in the tree in sorted order. |
boolean |
isEmpty()
isEmpty() Tests if this binary tree contains no keys. |
static void |
main(java.lang.String[] args)
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java.lang.Object |
put(java.lang.Object key,
java.lang.Object value)
put(Object, Object) puts a new entry in the tree, overwriting any previous entry with the same key. |
java.lang.Object |
remove(java.lang.Object key)
remove(Object) removes the key (and its corresponding value) from this Binary Tree. |
void |
setAscending(boolean ascending)
Set order. |
void |
setComparer(Comparer c)
Set the Comparer to be used for the keys in this tree. |
void |
setDuplicatesAllowed(boolean allow)
Define whether duplicate keys are allowed or not. |
int |
size()
size() |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public BinaryTree()
Method Detail |
public void setAscending(boolean ascending)
ascending
- true indicates ascending order; false indicates descendingpublic void setDuplicatesAllowed(boolean allow)
public void setComparer(Comparer c)
public java.util.Vector getValues()
public java.util.Vector getKeys()
public java.lang.Object get(java.lang.Object key)
key
- The key value being soughtpublic boolean isEmpty()
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
key
- The value of the key. Note this must be a String, and must not be null.value
- The value to be associated with this key. Must not be null.public java.lang.Object remove(java.lang.Object key)
key
- identifies the entry to be removedpublic int size()
public static void main(java.lang.String[] args) throws java.lang.Exception
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