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Merge pull request #1977 from smallrye/main-4.0
MicroProfile OpenAPI 4.0 to main
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180 changes: 180 additions & 0 deletions
180
core/src/main/java/io/smallrye/openapi/api/models/MapBasedModelImpl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| package io.smallrye.openapi.api.models; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
| import java.util.Set; | ||
|
|
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| import io.smallrye.openapi.api.util.MergeUtil; | ||
| import io.smallrye.openapi.runtime.util.ModelUtil; | ||
|
|
||
| /** | ||
| * Base implementation for extensible model objects which wrap a map of properties | ||
| */ | ||
| public abstract class MapBasedModelImpl implements ModelImpl { | ||
|
|
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| protected final LinkedHashMap<String, Object> data = new LinkedHashMap<>(); | ||
|
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| protected MapBasedModelImpl() { | ||
| } | ||
|
|
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| /** | ||
| * Merge all properties from another map-based model object into this one | ||
| * <p> | ||
| * Usually this method will return {@code this}, but it may return {@code other} or a new object. | ||
| * | ||
| * @param other the other map-based model object | ||
| * @return the merged object | ||
| */ | ||
| public MapBasedModelImpl mergeFrom(MapBasedModelImpl other) { | ||
| mergeMap(data, other.data, getNonMergableCollections()); | ||
| return this; | ||
| } | ||
|
|
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| public Map<String, Object> getDataMap() { | ||
| return data; | ||
| } | ||
|
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| private static <T> void mergeMap(Map<String, T> into, Map<String, T> from, Set<String> nonMergableNames) { | ||
| for (Entry<String, T> entry : from.entrySet()) { | ||
| String name = entry.getKey(); | ||
| T value = entry.getValue(); | ||
| T oldValue = into.get(entry.getKey()); | ||
| if (oldValue == null || oldValue.getClass() != value.getClass()) { | ||
| into.put(name, value); | ||
| } else { | ||
| if (oldValue instanceof Map && !nonMergableNames.contains(name)) { | ||
| mergeMap((Map<String, Object>) oldValue, (Map<String, Object>) value, nonMergableNames); | ||
| } else if (oldValue instanceof List && !nonMergableNames.contains(name)) { | ||
| mergeList((List<Object>) oldValue, (List<Object>) value); | ||
| } else if (oldValue instanceof ModelImpl) { | ||
| into.put(name, MergeUtil.mergeObjects(oldValue, value)); | ||
| } else { | ||
| into.put(name, value); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
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| private static <T> void mergeList(List<T> oldValue, List<T> value) { | ||
| Set<T> contents = new HashSet<>(oldValue); | ||
| for (T element : value) { | ||
| if (!contents.contains(element)) { | ||
| oldValue.add(element); | ||
| } | ||
| } | ||
| } | ||
|
|
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| protected <T> void setProperty(String propertyName, T value) { | ||
| if (value == null) { | ||
| data.remove(propertyName); | ||
| } else { | ||
| data.put(propertyName, value); | ||
| } | ||
| } | ||
|
|
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| protected <T> T getProperty(String propertyName, Class<T> type) { | ||
| Object result = data.get(propertyName); | ||
| if (type.isInstance(result)) { | ||
| return type.cast(result); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
|
|
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| @SuppressWarnings("unchecked") | ||
| protected <T> List<T> getListProperty(String propertyName) { | ||
| Object result = data.get(propertyName); | ||
| if (result instanceof List) { | ||
| return Collections.unmodifiableList((List<T>) result); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
|
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| protected <T> void setListProperty(String propertyName, List<T> value) { | ||
| value = ModelUtil.replace(value, ArrayList::new); | ||
| if (value == null) { | ||
| data.remove(propertyName); | ||
| } else { | ||
| data.put(propertyName, value); | ||
| } | ||
| } | ||
|
|
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| protected <T> void addToListProperty(String propertyName, T value) { | ||
| if (value != null) { | ||
| Object existing = data.get(propertyName); | ||
| List<T> list; | ||
| if (existing instanceof List) { | ||
| list = (List<T>) existing; | ||
| } else { | ||
| list = new ArrayList<>(); | ||
| data.put(propertyName, list); | ||
| } | ||
| list.add(value); | ||
| } | ||
| } | ||
|
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| protected <T> void removeFromListProperty(String propertyName, T toRemove) { | ||
| Object existing = data.get(propertyName); | ||
| if (existing instanceof List) { | ||
| List<T> list = (List<T>) existing; | ||
| ModelUtil.remove(list, toRemove); | ||
| } | ||
| } | ||
|
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| protected <T> void setMapProperty(String propertyName, Map<String, T> value) { | ||
| value = ModelUtil.replace(value, HashMap::new); | ||
| if (value == null) { | ||
| data.remove(propertyName); | ||
| } else { | ||
| data.put(propertyName, value); | ||
| } | ||
| } | ||
|
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| protected <T> Map<String, T> getMapProperty(String propertyName) { | ||
| Object result = data.get(propertyName); | ||
| if (result instanceof Map) { | ||
| return Collections.unmodifiableMap((Map<String, T>) data.get(propertyName)); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
|
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| protected <T> void addToMapProperty(String propertyName, String key, T value) { | ||
| if (value != null) { | ||
| Object existing = data.get(propertyName); | ||
| Map<String, T> map; | ||
| if (existing instanceof Map) { | ||
| map = (Map<String, T>) existing; | ||
| } else { | ||
| map = new HashMap<>(); | ||
| data.put(propertyName, map); | ||
| } | ||
| map.put(key, value); | ||
| } | ||
| } | ||
|
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| protected <T> void removeFromMapProperty(String propertyName, String key) { | ||
| Object existing = data.get(propertyName); | ||
| if (existing instanceof Map) { | ||
| Map<String, T> map = (Map<String, T>) existing; | ||
| ModelUtil.remove(map, key); | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Return a list of properties whose values should not be merged even if they're collections | ||
| * | ||
| * @return a list of properties which should be overwritten rather than merged | ||
| */ | ||
| protected Set<String> getNonMergableCollections() { | ||
| return Collections.emptySet(); | ||
| } | ||
|
|
||
| } |
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