private URLParam doAddParameters()

in dubbo-common/src/main/java/org/apache/dubbo/common/url/component/URLParam.java [559:644]
78 lines of code
22 McCabe index (conditional complexity)

    private URLParam doAddParameters(Map<String, String> parameters, boolean skipIfPresent) {
        // lazy init, null if no modify
        BitSet newKey = null;
        int[] newValueArray = null;
        Map<Integer, Integer> newValueMap = null;
        Map<String, String> newExtraParams = null;
        Map<String, Map<String, String>> newMethodParams = null;
        for (Map.Entry<String, String> entry : parameters.entrySet()) {
            if (skipIfPresent && hasParameter(entry.getKey())) {
                continue;
            }
            if (entry.getKey() == null || entry.getValue() == null) {
                continue;
            }
            int keyIndex = DynamicParamTable.getKeyIndex(enableCompressed, entry.getKey());
            if (keyIndex < 0) {
                // entry key is not present in DynamicParamTable, add it to EXTRA_PARAMS
                if (newExtraParams == null) {
                    newExtraParams = new HashMap<>(EXTRA_PARAMS);
                }
                newExtraParams.put(entry.getKey(), entry.getValue());
                String[] methodSplit = entry.getKey().split("\\.");
                if (methodSplit.length == 2) {
                    if (newMethodParams == null) {
                        newMethodParams = new HashMap<>(METHOD_PARAMETERS);
                    }
                    Map<String, String> methodMap =
                            newMethodParams.computeIfAbsent(methodSplit[1], (k) -> new HashMap<>());
                    methodMap.put(methodSplit[0], entry.getValue());
                }
            } else {
                if (KEY.get(keyIndex)) {
                    // contains key, replace value
                    if (parameters.size() > ADD_PARAMETER_ON_MOVE_THRESHOLD) {
                        // recover VALUE back to Map, use map to replace key pair
                        if (newValueMap == null) {
                            newValueMap = recoverValue();
                        }
                        newValueMap.put(keyIndex, DynamicParamTable.getValueIndex(entry.getKey(), entry.getValue()));
                    } else {
                        newValueArray = replaceOffset(
                                VALUE,
                                keyIndexToIndex(KEY, keyIndex),
                                DynamicParamTable.getValueIndex(entry.getKey(), entry.getValue()));
                    }
                } else {
                    // key is absent, add it
                    if (newKey == null) {
                        newKey = (BitSet) KEY.clone();
                    }
                    newKey.set(keyIndex);

                    if (parameters.size() > ADD_PARAMETER_ON_MOVE_THRESHOLD) {
                        // recover VALUE back to Map
                        if (newValueMap == null) {
                            newValueMap = recoverValue();
                        }
                        newValueMap.put(keyIndex, DynamicParamTable.getValueIndex(entry.getKey(), entry.getValue()));
                    } else {
                        // add parameter by moving array, only support for adding once
                        newValueArray = addByMove(
                                VALUE,
                                keyIndexToIndex(newKey, keyIndex),
                                DynamicParamTable.getValueIndex(entry.getKey(), entry.getValue()));
                    }
                }
            }
        }
        if (newKey == null) {
            newKey = KEY;
        }
        if (newValueArray == null && newValueMap == null) {
            newValueArray = VALUE;
        }
        if (newExtraParams == null) {
            newExtraParams = EXTRA_PARAMS;
        }
        if (newMethodParams == null) {
            newMethodParams = METHOD_PARAMETERS;
        }
        if (newValueMap == null) {
            return new URLParam(newKey, newValueArray, newExtraParams, newMethodParams, null);
        } else {
            return new URLParam(newKey, newValueMap, newExtraParams, newMethodParams, null);
        }
    }