org.apache.accumulo.core.security
public class ColumnVisibility extends Object
ColumnVisibility(byte[])
for the
definition of an expression.Modifier and Type | Class and Description |
---|---|
static class |
ColumnVisibility.Node |
static class |
ColumnVisibility.NodeComparator |
static class |
ColumnVisibility.NodeType |
Constructor and Description |
---|
ColumnVisibility()
Empty visibility.
|
ColumnVisibility(byte[] expression)
A convenience method for constructing from a string already encoded in UTF-8 bytes.
|
ColumnVisibility(String expression)
Set the column visibility for a Mutation.
|
ColumnVisibility(org.apache.hadoop.io.Text expression)
A convenience method for constructing from a string already encoded in UTF-8 bytes and contained in a
Text object. |
Modifier and Type | Method and Description |
---|---|
boolean |
equals(ColumnVisibility otherLe)
Compares two ColumnVisibilities for string equivalence, not as a meaningful comparison of terms and conditions.
|
boolean |
equals(Object obj)
|
byte[] |
flatten()
Generates a byte[] that represents a normalized, but logically equivalent, form of the supplied expression.
|
byte[] |
getExpression()
Accessor for the underlying byte string.
|
ColumnVisibility.Node |
getParseTree() |
int |
hashCode() |
static byte[] |
quote(byte[] term)
A convenience method to quote terms which are already encoded as UTF-8 bytes.
|
static String |
quote(String term)
Use to properly quote terms in a column visibility expression.
|
String |
toString() |
public ColumnVisibility()
ColumnVisibility(String)
public ColumnVisibility(String expression)
expression
- An expression of the rights needed to see this mutation. The expression is a sequence of characters from the set [A-Za-z0-9_-] along with the
binary operators "&" and "|" indicating that both operands are necessary, or the either is necessary. The following are valid expressions for
visibility:
A A|B (A|B)&(C|D) orange|(red&yellow)
The following are not valid expressions for visibility:
A|B&C A=B A|B| A&|B () ) dog|!cat
You can use any character you like in your column visibility expression with quoting. If your quoted term contains '"' or '\' then escape
them with '\'. The quote(String)
method will properly quote and escape terms for you.
"A#C"&B
public ColumnVisibility(org.apache.hadoop.io.Text expression)
Text
object.ColumnVisibility(String)
public ColumnVisibility(byte[] expression)
ColumnVisibility(String)
public byte[] getExpression()
public byte[] flatten()
public boolean equals(ColumnVisibility otherLe)
public ColumnVisibility.Node getParseTree()
public static String quote(String term)
Examples of using quote :
import static org.apache.accumulo.core.security.ColumnVisibility.quote; . . . ColumnVisibility cv = new ColumnVisibility(quote("A#C") + "&" + quote("FOO"));
public static byte[] quote(byte[] term)
quote(String)
Copyright © 2014 Apache Accumulo Project. All Rights Reserved.