public class JdbmTable<K,V> extends Object implements Table<K,V>
Constructor and Description |
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JdbmTable(org.apache.directory.shared.ldap.schema.SchemaManager schemaManager,
String name,
int numDupLimit,
RecordManager manager,
Comparator<K> keyComparator,
Comparator<V> valueComparator,
Serializer keySerializer,
Serializer valueSerializer)
Creates a Jdbm BTree based tuple Table abstraction that enables
duplicates.
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JdbmTable(org.apache.directory.shared.ldap.schema.SchemaManager schemaManager,
String name,
RecordManager manager,
Comparator<K> keyComparator,
Serializer keySerializer,
Serializer valueSerializer)
Creates a Jdbm BTree based tuple Table abstraction without duplicates
enabled using a simple key comparator.
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Modifier and Type | Method and Description |
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void |
close()
Closes the underlying Db of this Table.
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int |
count()
Gets the count of the number of records in this Table.
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int |
count(K key)
Gets the count of the number of records in this Table with a specific
key: returns the number of duplicates for a key.
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org.apache.directory.shared.ldap.cursor.Cursor<Tuple<K,V>> |
cursor()
Creates a Cursor that traverses Tuples in a Table.
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org.apache.directory.shared.ldap.cursor.Cursor<Tuple<K,V>> |
cursor(K key)
Creates a Cursor that traverses Table Tuples for the same key.
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V |
get(K key)
Gets the value of a record by key if the key exists.
|
Comparator<K> |
getKeyComparator()
Gets the key comparator used by this Table: may be null if this Table
was not initialized with one.
|
Serializer |
getKeySerializer() |
Marshaller<ArrayTree<V>> |
getMarshaller() |
String |
getName()
Gets the name of this Table.
|
Comparator<V> |
getValueComparator()
Gets the value comparator used by this Table: may be null if this Table
was not initialized with one.
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Serializer |
getValueSerializer() |
int |
greaterThanCount(K key)
Gets the number of records greater than or equal to a key value.
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boolean |
has(K key)
Checks to see if this table has one or more tuples with a specific key:
this is exactly the same as a get call with a check to see if the
returned value is null or not.
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boolean |
has(K key,
V value)
Checks to see if this table has a key with a specific value.
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boolean |
hasGreaterOrEqual(K key)
Checks to see if this table has a record with a key greater than or
equal to the key argument.
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boolean |
hasGreaterOrEqual(K key,
V val)
Checks to see if this table has a Tuple with a key equal to the key
argument, yet with a value greater than or equal to the value argument
provided.
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boolean |
hasLessOrEqual(K key)
Checks to see if this table has a record with a key less than or
equal to the key argument.
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boolean |
hasLessOrEqual(K key,
V val)
Checks to see if this table has a Tuple with a key equal to the key
argument, yet with a value less than or equal to the value argument
provided.
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boolean |
isCountExact()
Checks whether or not calls to count the number of keys greater than or
less than the key are exact.
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boolean |
isDupsEnabled()
Checks to see if this Table has allows for duplicate keys (a.k.a.
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int |
lessThanCount(K key)
Gets the number of records less than or equal to a key value.
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void |
put(K key,
V value)
Puts a record into this Table.
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void |
remove(K key)
Removes all records with a specified key from this Table.
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void |
remove(K key,
V value)
Removes a single key value pair with a specified key and value from
this Table.
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void |
sync()
Synchronizes the buffers with disk.
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org.apache.directory.shared.ldap.cursor.Cursor<V> |
valueCursor(K key)
Creates a Cursor that traverses Table values for the same key.
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public JdbmTable(org.apache.directory.shared.ldap.schema.SchemaManager schemaManager, String name, int numDupLimit, RecordManager manager, Comparator<K> keyComparator, Comparator<V> valueComparator, Serializer keySerializer, Serializer valueSerializer) throws IOException
name
- the name of the tablenumDupLimit
- the size limit of duplicates before switching to
BTrees for values instead of AvlTreesmanager
- the record manager to be used for this tablekeyComparator
- a key comparatorvalueComparator
- a value comparatorkeySerializer
- a serializer to use for the keys instead of using
default Java serialization which could be very expensivevalueSerializer
- a serializer to use for the values instead of
using default Java serialization which could be very expensiveIOException
- if the table's file cannot be createdpublic JdbmTable(org.apache.directory.shared.ldap.schema.SchemaManager schemaManager, String name, RecordManager manager, Comparator<K> keyComparator, Serializer keySerializer, Serializer valueSerializer) throws IOException
name
- the name of the tablemanager
- the record manager to be used for this tablekeyComparator
- a tuple comparatorkeySerializer
- a serializer to use for the keys instead of using
default Java serialization which could be very expensivevalueSerializer
- a serializer to use for the values instead of
using default Java serialization which could be very expensiveIOException
- if the table's file cannot be createdpublic Comparator<K> getKeyComparator()
Table
getKeyComparator
in interface Table<K,V>
Table.getKeyComparator()
public Comparator<V> getValueComparator()
Table
getValueComparator
in interface Table<K,V>
Table.getValueComparator()
public Serializer getKeySerializer()
public Serializer getValueSerializer()
public boolean isDupsEnabled()
Table
isDupsEnabled
in interface Table<K,V>
Table.isDupsEnabled()
public String getName()
Table
getName
in interface Table<K,V>
Table.getName()
public boolean isCountExact()
Table
isCountExact
in interface Table<K,V>
public int greaterThanCount(K key) throws IOException
Table
greaterThanCount
in interface Table<K,V>
key
- the key to use in comparisonsIOException
Table.greaterThanCount(Object)
public int lessThanCount(K key) throws IOException
Table
lessThanCount
in interface Table<K,V>
key
- the key to use in comparisonsIOException
Table.lessThanCount(Object)
public int count(K key) throws IOException
Table
count
in interface Table<K,V>
key
- the Object key to count.IOException
Table.count(java.lang.Object)
public int count() throws IOException
Table
count
in interface Table<K,V>
IOException
Table.count()
public V get(K key) throws Exception
Table
public boolean hasGreaterOrEqual(K key, V val) throws IOException
Table
hasGreaterOrEqual
in interface Table<K,V>
key
- the keyval
- the value to compare values toIOException
Table.hasGreaterOrEqual(Object,Object)
public boolean hasLessOrEqual(K key, V val) throws IOException
Table
hasLessOrEqual
in interface Table<K,V>
key
- the keyval
- the value to compare values toIOException
Table.hasLessOrEqual(Object,Object)
public boolean hasGreaterOrEqual(K key) throws IOException
Table
hasGreaterOrEqual
in interface Table<K,V>
key
- the key to compare keys toIOException
Table.hasGreaterOrEqual(Object)
public boolean hasLessOrEqual(K key) throws IOException
Table
hasLessOrEqual
in interface Table<K,V>
key
- the key to compare keys toIOException
Table.hasLessOrEqual(Object)
public boolean has(K key, V value) throws IOException
Table
has
in interface Table<K,V>
key
- the key to check forvalue
- the value to check forIOException
Table.has(java.lang.Object,
java.lang.Object)
public boolean has(K key) throws IOException
Table
has
in interface Table<K,V>
key
- the Object of the key to check forIOException
Table.has(java.lang.Object)
public void put(K key, V value) throws Exception
Table
put
in interface Table<K,V>
key
- the key of the recordvalue
- the value of the record.Exception
- if there is a failure to read or write to the
underlying DbIllegalArgumentException
- if a null key or value is usedTable.put(java.lang.Object,
java.lang.Object)
public void remove(K key, V value) throws IOException
Table
remove
in interface Table<K,V>
key
- the key of the record to removevalue
- the value of the record to removeIOException
Table.remove(java.lang.Object,
java.lang.Object)
public void remove(K key) throws IOException
Table
remove
in interface Table<K,V>
key
- the key of the records to removeIOException
Table.remove(Object)
public org.apache.directory.shared.ldap.cursor.Cursor<Tuple<K,V>> cursor() throws Exception
Table
public org.apache.directory.shared.ldap.cursor.Cursor<Tuple<K,V>> cursor(K key) throws Exception
Table
public org.apache.directory.shared.ldap.cursor.Cursor<V> valueCursor(K key) throws Exception
Table
valueCursor
in interface Table<K,V>
key
- the duplicate key to return the values ofException
- if there are failures accessing underlying storespublic void close() throws IOException
Table
close
in interface Table<K,V>
IOException
Table.close()
public void sync() throws IOException
IOException
- if errors are encountered on the flushpublic Marshaller<ArrayTree<V>> getMarshaller()
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