Examples of ColumnVisibility

org.apache.accumulo.core.security.ColumnVisibility

Validate the column visibility is a valid expression and set the visibility for a Mutation. See {@link ColumnVisibility#ColumnVisibility(byte[])} for thedefinition of an expression.

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

In addition to the base set of visibilities, any character can be used in the expression if it is quoted. If the quoted term contains '"' or '\', then escape the character with '\'. The {@link #quote(String)} method can be used to properly quote and escape terms automatically. The following is an example of a quoted term:

 "A#C"&B

  @Test
  public void test4() throws Exception {
    Mutation m1 = new Mutation(new Text("r1"));
    
    m1.put(nt("cf1"), nt("cq1"), nv("v1"));
    m1.put(nt("cf2"), nt("cq2"), new ColumnVisibility("cv2"), nv("v2"));
    
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(bos);
    m1.write(dos);
    dos.close();
    
    Mutation m2 = new Mutation(new Text("r2"));
    
    m2.put(nt("cf3"), nt("cq3"), nv("v3"));
    m2.put(nt("cf4"), nt("cq4"), new ColumnVisibility("cv2"), nv("v4"));
    
    ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
    DataInputStream dis = new DataInputStream(bis);
    
    // used to be a bug where puts done before readFields would be seen

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Examples of ColumnVisibility

Examples of org.apache.accumulo.core.security.ColumnVisibility