Examples of Unique

cascading.pipe.assembly.Unique
Class Unique {@link SubAssembly} is used to filter all duplicates out of a tuple stream.
Typically finding unique value in a tuple stream relies on a {@link GroupBy} and a {@link FirstNBuffer}{@link cascading.operation.Buffer} operation.
If the {@code include} value is set to {@link Include#NO_NULLS}, any tuple consisting of only {@code null}values will be removed from the stream.
This SubAssembly uses the {@link FilterPartialDuplicates} {@link cascading.operation.Filter}to remove as many observed duplicates before the GroupBy operator to reduce IO over the network.
This strategy is similar to using {@code combiners}, except no sorting or serialization is invoked and results in a much simpler mechanism.
The {@code threshold} value tells the underlying FilterPartialDuplicates how many values to cache for duplicatecomparison before dropping values from the LRU cache.
com.et.ar.annotations.Unique
com.skyline.energy.annotation.Unique
org.apache.openjpa.jdbc.schema.Unique
Represents a unique constraint. It can also represent a partial constraint. @author Abe White
org.apache.xerces.validators.schema.identity.Unique
Schema unique identity constraint. @author Andy Clark, IBM @version $Id: Unique.java,v 1.3 2001/02/20 06:12:28 andyc Exp $
org.exolab.castor.xml.schema.Unique
A class that represents the XML Schema Identity Constraint: Unique. @author Keith Visco @version $Revision: 6230 $ $Date: 2006-04-14 04:14:43 -0600 (Fri, 14 Apr 2006) $
org.molgenis.model.jaxb.Unique
org.supercsv.cellprocessor.constraint.Unique
Ensure that upon processing a CSV file (reading or writing), that values of the column all are unique. Comparison is based upon each elements equals() method of the objects and lookup takes O(1).
Compared to {@link UniqueHashCode} this processor potentially uses more memory, as it stores references to eachencountered object rather than just their hashcodes. On reading huge files this can be a real memory-hazard, however, it ensures a true uniqueness check. @since 1.50 @author Kasper B. Graversen @author Dominique De Vito
siena.Unique

Examples of org.apache.openjpa.jdbc.schema.Unique

        String tableName = toTableName(table.schema(), table.name());
        if (tableName != null)
            cm.getMappingInfo().setTableName(tableName);


        for (UniqueConstraint uniqueConstraint:table.uniqueConstraints()) {
            Unique unique = newUnique(cm, null, uniqueConstraint.columnNames());
            cm.getMappingInfo().addUnique(unique);
        }
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

    
    private static Unique newUnique(ClassMapping cm, String name, 
        String[] columnNames) {
        if (columnNames == null || columnNames.length == 0)
            return null;
        Unique uniqueConstraint = new Unique();
        uniqueConstraint.setName(name);
        for (int i=0; i<columnNames.length; i++) {
            if (StringUtils.isEmpty(columnNames[i]))
                throw new UserException(_loc.get("empty-unique-column", 
                    Arrays.toString(columnNames), cm));
            Column column = new Column();
            column.setName(columnNames[i]);
            uniqueConstraint.addColumn(column);
        }
        return uniqueConstraint;
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

            return;


        Index idx = findIndex(fk.getColumns());
        if (idx != null)
            field.setJoinIndex(idx);
        Unique unq = findUnique(fk.getColumns());
        if (unq != null)
            field.setJoinUnique(unq);
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

        Column[] cols = (vm.getForeignKey() != null)
            ? vm.getForeignKey().getColumns() : vm.getColumns();
        Index idx = findIndex(cols);
        if (idx != null)
            vm.setValueIndex(idx);
        Unique unq = findUnique(cols);
        if (unq != null)
            vm.setValueUnique(unq);
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

                                Arrays.toString(table.getColumnNames())}));
              }
                    Column uniqueColumn = table.getColumn(columnName);
              uniqueColumns[i] = uniqueColumn;
            }
            Unique unique = createUnique(cm, "unique", template,  
                uniqueColumns, adapt);
            if (unique != null)
              result.add(unique);
          }
        }

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Examples of org.apache.openjpa.jdbc.schema.Unique


    private void setUnique(FieldMapping fm, EnumSet<UniqueFlag> unique) {
        if (unique.size() == 2) // i.e. TRUE & FALSE
            getLog().warn(_loc.get("inconsist-col-attrs", fm));
        else if (unique.contains(UniqueFlag.TRUE))
            fm.getValueInfo().setUnique(new Unique());
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

     * table. 
     * Pushes the Unique element in the stack.
     */
    private boolean startUniqueConstraint(Attributes attrs) 
        throws SAXException {
        Unique unique = new Unique();


        DBIdentifier name = DBIdentifier.newConstraint(attrs.getValue("name"), delimit());
        if (!DBIdentifier.isEmpty(name)) {
            unique.setIdentifier(name);
        }


        pushElement(unique);
        return true;
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

     * within a ClassMapping element and <em>not</em> within a secondary
     * table. The stack is popped and the Unique element is added to the
     * ClassMappingInfo. 
     */
    private void endUniqueConstraint() {
        Unique unique = (Unique) popElement();
        Object ctx = currentElement();
        DBIdentifier tableName = DBIdentifier.newTable("?");
        if (ctx instanceof ClassMapping) {
          ClassMappingInfo info = ((ClassMapping) ctx).getMappingInfo();
          tableName = (_secondaryTable == null) 
            ? info.getTableIdentifier() : DBIdentifier.newTable(_secondaryTable, delimit());
          info.addUnique(tableName, unique);
        } else if (ctx instanceof FieldMapping) {// JoinTable
          FieldMappingInfo info = ((FieldMapping)ctx).getMappingInfo();
          info.addJoinTableUnique(unique);
        } else if (ctx instanceof SequenceMapping) {
          SequenceMapping seq = (SequenceMapping)ctx;
          unique.setTableIdentifier(seq.getTableIdentifier());
          Column[] uniqueColumns = unique.getColumns();
          DBIdentifier[] columnNames = new DBIdentifier[uniqueColumns.length];
          int i = 0;
          for (Column uniqueColumn : uniqueColumns)
            columnNames[i++] = uniqueColumn.getIdentifier().clone();
          seq.setUniqueColumnsIdentifier(columnNames);
          if (!DBIdentifier.isEmpty(unique.getIdentifier())) {
              seq.setUniqueConstraintIdentifier(unique.getIdentifier());
          }
        } else {
          throw new InternalException();
        }
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

     * the current Unique element that resides in the top of the stack.
     */
    private boolean endColumnName() {
        Object current = currentElement();
        if (current instanceof Unique) {
            Unique unique = (Unique) current;
            Column column = new Column();
            column.setIdentifier(DBIdentifier.newColumn(this.currentText(), delimit()));
            unique.addColumn(column);
            return true;
        }
        return false;
    }

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Examples of org.apache.openjpa.jdbc.schema.Unique

    private boolean endName() {
        String name = this.currentText();
        if (StringUtils.isNotEmpty(name)) {
            Object current = currentElement();
            if (current instanceof Unique) {
                Unique unq = (Unique)current;
                unq.setIdentifier(DBIdentifier.newConstraint(name, delimit()));
            }
        }
            
        return true;
    }

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