Examples with PresentFilter org.apache.directory.api.ldap.codec.search.PresentFilter used on opensource projects

Example 1 with PresentFilter

use of org.apache.directory.api.ldap.codec.search.PresentFilter in project directory-ldap-api by apache.

the class InitPresentFilter method action.

/**
 * {@inheritDoc}
 */
public void action(LdapMessageContainer<SearchRequestDecorator> container) throws DecoderException {
    SearchRequestDecorator searchRequestDecorator = container.getMessage();
    TLV tlv = container.getCurrentTLV();
    // We can allocate the Attribute Value Assertion
    PresentFilter presentFilter = new PresentFilter(container.getTlvId());
    // add the filter to the request filter
    searchRequestDecorator.addCurrentFilter(presentFilter);
    searchRequestDecorator.setTerminalFilter(presentFilter);
    String value = Strings.utf8ToString(tlv.getValue().getData());
    if (Strings.isEmpty(value)) {
        presentFilter.setAttributeDescription("");
    } else {
        // Store the value.
        String type = Strings.utf8ToString(tlv.getValue().getData());
        presentFilter.setAttributeDescription(type);
    }
    // We now have to get back to the nearest filter which is
    // not terminal.
    searchRequestDecorator.unstackFilters(container);
    if (IS_DEBUG) {
        LOG.debug("Initialize Present filter");
    }
}

Example 2 with PresentFilter

use of org.apache.directory.api.ldap.codec.search.PresentFilter in project directory-ldap-api by apache.

the class SearchRequestDecorator method unstackFilters.

/**
 * This method is used to clear the filter's stack for terminated elements. An element
 * is considered as terminated either if :
 *  - it's a final element (ie an element which cannot contains a Filter)
 *  - its current length equals its expected length.
 *
 * @param container The container being decoded
 */
@SuppressWarnings("unchecked")
public void unstackFilters(Asn1Container container) {
    LdapMessageContainer<MessageDecorator<Message>> ldapMessageContainer = (LdapMessageContainer<MessageDecorator<Message>>) container;
    TLV tlv = ldapMessageContainer.getCurrentTLV();
    TLV localParent = tlv.getParent();
    Filter localFilter = terminalFilter;
    // The parent has been completed, so fold it
    while ((localParent != null) && (localParent.getExpectedLength() == 0)) {
        int parentTlvId = localFilter.getParent() != null ? localFilter.getParent().getTlvId() : localFilter.getParentTlvId();
        if (localParent.getId() != parentTlvId) {
            localParent = localParent.getParent();
        } else {
            Filter filterParent = localFilter.getParent();
            // pushed on the stack, so we need to get its parent's parent
            if (localFilter instanceof PresentFilter) {
                if (filterParent == null) {
                    // We don't have parent, get out
                    break;
                }
                filterParent = filterParent.getParent();
            } else {
                filterParent = filterParent.getParent();
            }
            if (filterParent != null) {
                // The parent is a filter ; it will become the new currentFilter
                // and we will loop again.
                localFilter = currentFilter;
                currentFilter = filterParent;
                localParent = localParent.getParent();
            } else {
                // We can stop the recursion, we have reached the searchResult Object
                break;
            }
        }
    }
}

Example 3 with PresentFilter

use of org.apache.directory.api.ldap.codec.search.PresentFilter in project directory-ldap-api by apache.

the class SearchRequestDecorator method transform.

/**
 * Transform the Filter part of a SearchRequest to an ExprNode
 *
 * @param filter The filter to be transformed
 * @return An ExprNode
 * @throws LdapSchemaException If teh filter is invalid
 */
@SuppressWarnings({ "rawtypes" })
private ExprNode transform(Filter filter) throws LdapSchemaException {
    if (filter != null) {
        // Transform OR, AND or NOT leaves
        if (filter instanceof ConnectorFilter) {
            BranchNode branch;
            if (filter instanceof AndFilter) {
                branch = new AndNode();
            } else if (filter instanceof OrFilter) {
                branch = new OrNode();
            } else {
                branch = new NotNode();
            }
            List<Filter> filtersSet = ((ConnectorFilter) filter).getFilterSet();
            // Loop on all AND/OR children
            if (filtersSet != null) {
                for (Filter node : filtersSet) {
                    branch.addNode(transform(node));
                }
            }
            return branch;
        } else {
            // Transform PRESENT or ATTRIBUTE_VALUE_ASSERTION
            LeafNode branch = null;
            if (filter instanceof PresentFilter) {
                branch = new PresenceNode(((PresentFilter) filter).getAttributeDescription());
            } else if (filter instanceof AttributeValueAssertionFilter) {
                AttributeValueAssertion ava = ((AttributeValueAssertionFilter) filter).getAssertion();
                // Transform =, >=, <=, ~= filters
                int filterType = ((AttributeValueAssertionFilter) filter).getFilterType();
                switch(filterType) {
                    case LdapCodecConstants.EQUALITY_MATCH_FILTER:
                        branch = new EqualityNode(ava.getAttributeDesc(), ava.getAssertion());
                        break;
                    case LdapCodecConstants.GREATER_OR_EQUAL_FILTER:
                        branch = new GreaterEqNode(ava.getAttributeDesc(), ava.getAssertion());
                        break;
                    case LdapCodecConstants.LESS_OR_EQUAL_FILTER:
                        branch = new LessEqNode(ava.getAttributeDesc(), ava.getAssertion());
                        break;
                    case LdapCodecConstants.APPROX_MATCH_FILTER:
                        branch = new ApproximateNode(ava.getAttributeDesc(), ava.getAssertion());
                        break;
                    default:
                        throw new IllegalArgumentException("Unexpected filter type: " + filterType);
                }
            } else if (filter instanceof SubstringFilter) {
                // Transform Substring filters
                SubstringFilter substrFilter = (SubstringFilter) filter;
                String initialString = null;
                String finalString = null;
                List<String> anyString = null;
                if (substrFilter.getInitialSubstrings() != null) {
                    initialString = substrFilter.getInitialSubstrings();
                }
                if (substrFilter.getFinalSubstrings() != null) {
                    finalString = substrFilter.getFinalSubstrings();
                }
                if (substrFilter.getAnySubstrings() != null) {
                    anyString = new ArrayList<>();
                    for (String any : substrFilter.getAnySubstrings()) {
                        anyString.add(any);
                    }
                }
                branch = new SubstringNode(anyString, substrFilter.getType(), initialString, finalString);
            } else if (filter instanceof ExtensibleMatchFilter) {
                // Transform Extensible Match Filter
                ExtensibleMatchFilter extFilter = (ExtensibleMatchFilter) filter;
                String matchingRule = null;
                Value value = extFilter.getMatchValue();
                if (extFilter.getMatchingRule() != null) {
                    matchingRule = extFilter.getMatchingRule();
                }
                branch = new ExtensibleNode(extFilter.getType(), value, matchingRule, extFilter.isDnAttributes());
            }
            return branch;
        }
    } else {
        // We have found nothing to transform. Return null then.
        return null;
    }
}

Example 4 with PresentFilter

use of org.apache.directory.api.ldap.codec.search.PresentFilter in project directory-ldap-api by apache.

the class SearchRequestDecorator method transform.

/**
 * Transform an ExprNode filter to a Filter
 *
 * @param exprNode The filter to be transformed
 * @return A filter
 */
private static Filter transform(ExprNode exprNode) {
    if (exprNode != null) {
        Filter filter = null;
        // Transform OR, AND or NOT leaves
        if (exprNode instanceof BranchNode) {
            if (exprNode instanceof AndNode) {
                filter = new AndFilter();
            } else if (exprNode instanceof OrNode) {
                filter = new OrFilter();
            } else {
                filter = new NotFilter();
            }
            List<ExprNode> children = ((BranchNode) exprNode).getChildren();
            // Loop on all AND/OR children
            if (children != null) {
                for (ExprNode child : children) {
                    try {
                        ((ConnectorFilter) filter).addFilter(transform(child));
                    } catch (DecoderException de) {
                        return null;
                    }
                }
            }
        } else {
            if (exprNode instanceof PresenceNode) {
                // Transform Presence Node
                filter = new PresentFilter();
                ((PresentFilter) filter).setAttributeDescription(((PresenceNode) exprNode).getAttribute());
            } else if (exprNode instanceof SimpleNode<?>) {
                if (exprNode instanceof EqualityNode<?>) {
                    filter = new AttributeValueAssertionFilter(LdapCodecConstants.EQUALITY_MATCH_FILTER);
                    AttributeValueAssertion assertion = new AttributeValueAssertion();
                    assertion.setAttributeDesc(((EqualityNode<?>) exprNode).getAttribute());
                    assertion.setAssertion(((EqualityNode<?>) exprNode).getValue().getBytes());
                    ((AttributeValueAssertionFilter) filter).setAssertion(assertion);
                } else if (exprNode instanceof GreaterEqNode<?>) {
                    filter = new AttributeValueAssertionFilter(LdapCodecConstants.GREATER_OR_EQUAL_FILTER);
                    AttributeValueAssertion assertion = new AttributeValueAssertion();
                    assertion.setAttributeDesc(((GreaterEqNode<?>) exprNode).getAttribute());
                    assertion.setAssertion(((GreaterEqNode<?>) exprNode).getValue().getBytes());
                    ((AttributeValueAssertionFilter) filter).setAssertion(assertion);
                } else if (exprNode instanceof LessEqNode<?>) {
                    filter = new AttributeValueAssertionFilter(LdapCodecConstants.LESS_OR_EQUAL_FILTER);
                    AttributeValueAssertion assertion = new AttributeValueAssertion();
                    assertion.setAttributeDesc(((LessEqNode<?>) exprNode).getAttribute());
                    assertion.setAssertion(((LessEqNode<?>) exprNode).getValue().getBytes());
                    ((AttributeValueAssertionFilter) filter).setAssertion(assertion);
                } else if (exprNode instanceof ApproximateNode<?>) {
                    filter = new AttributeValueAssertionFilter(LdapCodecConstants.APPROX_MATCH_FILTER);
                    AttributeValueAssertion assertion = new AttributeValueAssertion();
                    assertion.setAttributeDesc(((ApproximateNode<?>) exprNode).getAttribute());
                    assertion.setAssertion(((ApproximateNode<?>) exprNode).getValue().getBytes());
                    ((AttributeValueAssertionFilter) filter).setAssertion(assertion);
                }
            } else if (exprNode instanceof SubstringNode) {
                // Transform Substring Nodes
                filter = new SubstringFilter();
                ((SubstringFilter) filter).setType(((SubstringNode) exprNode).getAttribute());
                String initialString = ((SubstringNode) exprNode).getInitial();
                String finalString = ((SubstringNode) exprNode).getFinal();
                List<String> anyStrings = ((SubstringNode) exprNode).getAny();
                if (initialString != null) {
                    ((SubstringFilter) filter).setInitialSubstrings(initialString);
                }
                if (finalString != null) {
                    ((SubstringFilter) filter).setFinalSubstrings(finalString);
                }
                if (anyStrings != null) {
                    for (String any : anyStrings) {
                        ((SubstringFilter) filter).addAnySubstrings(any);
                    }
                }
            } else if (exprNode instanceof ExtensibleNode) {
                // Transform Extensible Node
                filter = new ExtensibleMatchFilter();
                String attribute = ((ExtensibleNode) exprNode).getAttribute();
                String matchingRule = ((ExtensibleNode) exprNode).getMatchingRuleId();
                boolean dnAttributes = ((ExtensibleNode) exprNode).hasDnAttributes();
                Value value = ((ExtensibleNode) exprNode).getValue();
                if (attribute != null) {
                    ((ExtensibleMatchFilter) filter).setType(attribute);
                }
                if (matchingRule != null) {
                    ((ExtensibleMatchFilter) filter).setMatchingRule(matchingRule);
                }
                ((ExtensibleMatchFilter) filter).setMatchValue(value);
                ((ExtensibleMatchFilter) filter).setDnAttributes(dnAttributes);
            }
        }
        return filter;
    } else {
        // We have found nothing to transform. Return null then.
        return null;
    }
}