Examples with ForEachMediator org.apache.synapse.mediators.builtin.ForEachMediator used on opensource projects

Example 1 with ForEachMediator

use of org.apache.synapse.mediators.builtin.ForEachMediator in project wso2-synapse by wso2.

the class ForEachMediatorSerializer method serializeSpecificMediator.

@Override
protected OMElement serializeSpecificMediator(Mediator m) {
    if (!(m instanceof ForEachMediator)) {
        handleException("Unsupported mediator passed in for serialization : " + m.getType());
    }
    OMElement forEachElem = fac.createOMElement("foreach", synNS);
    saveTracingState(forEachElem, m);
    ForEachMediator forEachMed = (ForEachMediator) m;
    if (forEachMed.getId() != null) {
        forEachElem.addAttribute("id", forEachMed.getId(), nullNS);
    }
    if (forEachMed.getExpression() != null) {
        SynapsePathSerializer.serializePath(forEachMed.getExpression(), forEachElem, "expression");
    } else {
        handleException("Missing expression of the ForEach which is required.");
    }
    if (forEachMed.getSequenceRef() != null) {
        forEachElem.addAttribute("sequence", forEachMed.getSequenceRef(), null);
    } else if (forEachMed.getSequence() != null) {
        SequenceMediatorSerializer seqSerializer = new SequenceMediatorSerializer();
        OMElement seqElement = seqSerializer.serializeAnonymousSequence(null, forEachMed.getSequence());
        seqElement.setLocalName("sequence");
        forEachElem.addChild(seqElement);
    }
    serializeComments(forEachElem, forEachMed.getCommentsList());
    return forEachElem;
}

Example 2 with ForEachMediator

use of org.apache.synapse.mediators.builtin.ForEachMediator in project wso2-synapse by wso2.

the class MediatorTreeTraverseUtil method getMediatorReference.

/**
 * Returns mediator referece associated with position while traversing the mediator tree.
 *
 * @param synCfg      synapse configuration reference
 * @param seqMediator sequence mediator which traverse happens
 * @param position    array of tree nodes specifying position integer with respect to it's parent node
 *                    starting from the root parent.
 * @return Mediator reference
 */
public static Mediator getMediatorReference(SynapseConfiguration synCfg, Mediator seqMediator, int[] position) {
    Mediator current_mediator = null;
    for (int counter = 0; counter < position.length; counter++) {
        if (counter == 0) {
            int mediatorCount = ((AbstractListMediator) seqMediator).getList().size();
            int correctedPosition = getCorrectedPossition((AbstractListMediator) seqMediator, position[counter]);
            if (mediatorCount > correctedPosition) {
                current_mediator = ((AbstractListMediator) seqMediator).getChild(correctedPosition);
            } else {
                log.warn("Mediator position requested is larger than last index : " + position[counter]);
            }
        }
        if (current_mediator != null && counter != 0) {
            if (current_mediator instanceof InvokeMediator) {
                current_mediator = synCfg.getSequenceTemplate(((InvokeMediator) current_mediator).getTargetTemplate());
            } else if (current_mediator instanceof FilterMediator) {
                if (position[counter] == 0) {
                    if (((FilterMediator) current_mediator).getElseMediator() != null) {
                        current_mediator = ((FilterMediator) current_mediator).getElseMediator();
                    } else if (((FilterMediator) current_mediator).getElseKey() != null) {
                        current_mediator = synCfg.getSequence(((FilterMediator) current_mediator).getElseKey());
                    }
                    continue;
                } else if (position[counter] == 1) {
                    if (((FilterMediator) current_mediator).getThenKey() != null) {
                        current_mediator = synCfg.getSequence(((FilterMediator) current_mediator).getThenKey());
                    } else {
                        counter = counter + 1;
                        if (counter < position.length) {
                            int mediatorCount = ((AbstractListMediator) current_mediator).getList().size();
                            int correctedPosition = getCorrectedPossition((AbstractListMediator) current_mediator, position[counter]);
                            if (mediatorCount > correctedPosition) {
                                current_mediator = ((AbstractListMediator) current_mediator).getChild(correctedPosition);
                            } else {
                                log.warn("Mediator position requested is larger than last index : " + position[counter]);
                            }
                        }
                    }
                    continue;
                }
            } else if (current_mediator instanceof SwitchMediator) {
                if (position[counter] == 0) {
                    SwitchCase switchCase = ((SwitchMediator) current_mediator).getDefaultCase();
                    if (switchCase != null) {
                        current_mediator = switchCase.getCaseMediator();
                    } else {
                        current_mediator = null;
                    }
                } else {
                    SwitchCase switchCase = ((SwitchMediator) current_mediator).getCases().get(position[counter] - 1);
                    if (switchCase != null) {
                        current_mediator = switchCase.getCaseMediator();
                    } else {
                        current_mediator = null;
                    }
                }
                continue;
            } else if (current_mediator instanceof AggregateMediator) {
                if (((AggregateMediator) current_mediator).getOnCompleteSequence() != null) {
                    current_mediator = ((AggregateMediator) current_mediator).getOnCompleteSequence();
                } else if (((AggregateMediator) current_mediator).getOnCompleteSequenceRef() != null) {
                    current_mediator = synCfg.getSequence(((AggregateMediator) current_mediator).getOnCompleteSequenceRef());
                }
            } else if (current_mediator instanceof ForEachMediator) {
                if (((ForEachMediator) current_mediator).getSequence() != null) {
                    current_mediator = ((ForEachMediator) current_mediator).getSequence();
                } else if (((ForEachMediator) current_mediator).getSequenceRef() != null) {
                    current_mediator = synCfg.getSequence(((ForEachMediator) current_mediator).getSequenceRef());
                }
            } else if (current_mediator instanceof IterateMediator) {
                if (((IterateMediator) current_mediator).getTarget().getSequence() != null) {
                    current_mediator = ((IterateMediator) current_mediator).getTarget().getSequence();
                } else if (((IterateMediator) current_mediator).getTarget().getSequenceRef() != null) {
                    current_mediator = synCfg.getSequence(((IterateMediator) current_mediator).getTarget().getSequenceRef());
                }
            } else if (current_mediator instanceof CloneMediator) {
                if (((CloneMediator) current_mediator).getTargets().get(position[counter]).getSequence() != null) {
                    current_mediator = ((CloneMediator) current_mediator).getTargets().get(position[counter]).getSequence();
                } else if (((CloneMediator) current_mediator).getTargets().get(position[counter]).getSequenceRef() != null) {
                    current_mediator = synCfg.getSequence(((CloneMediator) current_mediator).getTargets().get(position[counter]).getSequenceRef());
                }
                continue;
            } else if (current_mediator.getType().equals("ThrottleMediator")) {
                current_mediator = ((EnclosedInlinedSequence) current_mediator).getInlineSequence(synCfg, position[counter]);
                continue;
            } else if (current_mediator.getType().equals("EntitlementMediator")) {
                current_mediator = ((EnclosedInlinedSequence) current_mediator).getInlineSequence(synCfg, position[counter]);
                continue;
            } else if (current_mediator.getType().equals("CacheMediator")) {
                current_mediator = ((EnclosedInlinedSequence) current_mediator).getInlineSequence(synCfg, 0);
            }
            if (current_mediator != null && (current_mediator instanceof AbstractListMediator)) {
                int mediatorCount = ((AbstractListMediator) current_mediator).getList().size();
                int correctedPosition = getCorrectedPossition((AbstractListMediator) current_mediator, position[counter]);
                if (mediatorCount > correctedPosition) {
                    current_mediator = ((AbstractListMediator) current_mediator).getChild(correctedPosition);
                } else {
                    log.warn("Mediator position requested is larger than last index : " + position[counter]);
                }
            } else {
                current_mediator = null;
                break;
            }
        }
    }
    return current_mediator;
}

Example 3 with ForEachMediator

use of org.apache.synapse.mediators.builtin.ForEachMediator in project wso2-synapse by wso2.

the class ForEachMediatorFactory method createSpecificMediator.

@Override
protected Mediator createSpecificMediator(OMElement elem, Properties properties) {
    ForEachMediator mediator = new ForEachMediator();
    processAuditStatus(mediator, elem);
    OMAttribute id = elem.getAttribute(ID_Q);
    if (id != null) {
        mediator.setId(id.getAttributeValue());
    }
    OMAttribute expression = elem.getAttribute(ATT_EXPRN);
    if (expression != null) {
        try {
            mediator.setExpression(SynapsePathFactory.getSynapsePath(elem, ATT_EXPRN));
        } catch (JaxenException e) {
            handleException("Unable to build the ForEach Mediator. " + "Invalid XPath/JSONPath " + expression.getAttributeValue(), e);
        }
    } else {
        handleException("XPath/JSONPath expression is required " + "for an ForEach Mediator under the \"expression\" attribute");
    }
    OMAttribute sequenceAttr = elem.getAttribute(new QName(XMLConfigConstants.NULL_NAMESPACE, "sequence"));
    OMElement sequence;
    if (sequenceAttr != null && sequenceAttr.getAttributeValue() != null) {
        mediator.setSequenceRef(sequenceAttr.getAttributeValue());
    } else if ((sequence = elem.getFirstChildWithName(new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "sequence"))) != null) {
        SequenceMediatorFactory fac = new SequenceMediatorFactory();
        SequenceMediator sequenceMediator = fac.createAnonymousSequence(sequence, properties);
        if (validateSequence(sequenceMediator)) {
            mediator.setSequence(sequenceMediator);
        } else {
            handleException("Sequence cannot contain Call, Send or CallOut mediators");
        }
    }
    addAllCommentChildrenToList(elem, mediator.getCommentsList());
    return mediator;
}