Examples of com.db4o.query.Query.constrain()

com.db4o.query.Query.constrain()
adds a constraint to this node.

If the constraint contains attributes that are not yet present in the query graph, the query graph is extended accordingly.

Special behaviour for:
- class {@link Class}: confine the result to objects of one class or to objects implementing an interface.
- interface {@link Evaluation}: run evaluation callbacks against all candidates.
@param constraint the constraint to be added to this Query. @return {@link Constraint} a new {@link Constraint} for thisquery node or null for objects implementing the {@link Evaluation} interface.

              if(!ctn.isCaseSensitive())
                throw new InvalidCriteriaException("Case insensitive equals checking is currently not supported");
              pquery.constrain(checkValue);
              break;
            case GREATER_THAN:
              pquery.constrain(checkValue).greater();
              break;
            case GREATER_THAN_EQUALS:
              pquery.constrain(checkValue).greater().equal();
              break;
            case IN: {

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              break;
            case GREATER_THAN:
              pquery.constrain(checkValue).greater();
              break;
            case GREATER_THAN_EQUALS:
              pquery.constrain(checkValue).greater().equal();
              break;
            case IN: {
              Object[] arr;
              if(checkValue.getClass().isArray()) {
                arr = (Object[]) checkValue;

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                        .getClass().toString());
              }
              Constraint c = null;
              for(final Object o : arr) {
                if(c == null) {
                  c = pquery.constrain(o);
                }
                else {
                  c.or(pquery.constrain(o));
                }
              }

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              for(final Object o : arr) {
                if(c == null) {
                  c = pquery.constrain(o);
                }
                else {
                  c.or(pquery.constrain(o));
                }
              }
              break;
            }
            case IS:

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                    + DBType.class.getSimpleName());
              }
              final DBType dbType = (DBType) checkValue;
              if(dbType == DBType.NULL) {
                // null
                pquery.constrain(null);
              }
              else {
                // not null
                pquery.constrain(null).not();
              }

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                // null
                pquery.constrain(null);
              }
              else {
                // not null
                pquery.constrain(null).not();
              }
            case LESS_THAN:
              pquery.constrain(checkValue).smaller();
              break;
            case LESS_THAN_EQUALS:

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              else {
                // not null
                pquery.constrain(null).not();
              }
            case LESS_THAN:
              pquery.constrain(checkValue).smaller();
              break;
            case LESS_THAN_EQUALS:
              pquery.constrain(checkValue).smaller().equal();
              break;
            case LIKE:

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              }
            case LESS_THAN:
              pquery.constrain(checkValue).smaller();
              break;
            case LESS_THAN_EQUALS:
              pquery.constrain(checkValue).smaller().equal();
              break;
            case LIKE:
              pquery.constrain(checkValue).like();
              break;
            case NOT_EQUALS:

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              break;
            case LESS_THAN_EQUALS:
              pquery.constrain(checkValue).smaller().equal();
              break;
            case LIKE:
              pquery.constrain(checkValue).like();
              break;
            case NOT_EQUALS:
              pquery.constrain(checkValue).not();
              break;
            case STARTS_WITH:

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              break;
            case LIKE:
              pquery.constrain(checkValue).like();
              break;
            case NOT_EQUALS:
              pquery.constrain(checkValue).not();
              break;
            case STARTS_WITH:
              pquery.constrain(checkValue).startsWith(ctn.isCaseSensitive());
              break;
          } // comparator switch

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