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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

package feign;

import feign.Param.Expander;

import java.io.Serializable;

import java.lang.reflect.Method;

import java.lang.reflect.Type;

import java.util.*;

import java.util.stream.Collectors;

public final class MethodMetadata implements Serializable {

private static final long serialVersionUID = 1L;

private String configKey;

private transient Type returnType;

private Integer urlIndex;

private Integer bodyIndex;

private Integer headerMapIndex;

private Integer queryMapIndex;

private QueryMapEncoder queryMapEncoder;

private boolean alwaysEncodeBody;

private transient Type bodyType;

private final RequestTemplate template = new RequestTemplate();

private final List<String> formParams = new ArrayList<String>();

private final Map<Integer, Collection<String>> indexToName =

new LinkedHashMap<Integer, Collection<String>>();

private final Map<Integer, Class<? extends Expander>> indexToExpanderClass =

new LinkedHashMap<Integer, Class<? extends Expander>>();

private final Map<Integer, Boolean> indexToEncoded = new LinkedHashMap<Integer, Boolean>();

private transient Map<Integer, Expander> indexToExpander;

private BitSet parameterToIgnore = new BitSet();

private boolean ignored;

private boolean bodyRequired = true;

private transient Class<?> targetType;

private transient Method method;

private final transient List<String> warnings = new ArrayList<>();

MethodMetadata() {

template.methodMetadata(this);

}

/**

* Used as a reference to this method. For example, {@link Logger#log(String, String, Object...)

* logging} or {@link ReflectiveFeign reflective dispatch}.

* @see Feign#configKey(Class, java.lang.reflect.Method)

public String configKey() {

return configKey;

}

public MethodMetadata configKey(String configKey) {

this.configKey = configKey;

return this;

}

public Type returnType() {

return returnType;

}

public MethodMetadata returnType(Type returnType) {

this.returnType = returnType;

return this;

}

public Integer urlIndex() {

return urlIndex;

}

public MethodMetadata urlIndex(Integer urlIndex) {

this.urlIndex = urlIndex;

return this;

}

public Integer bodyIndex() {

return bodyIndex;

}

public MethodMetadata bodyIndex(Integer bodyIndex) {

this.bodyIndex = bodyIndex;

return this;

}

public Integer headerMapIndex() {

return headerMapIndex;

}

public MethodMetadata headerMapIndex(Integer headerMapIndex) {

this.headerMapIndex = headerMapIndex;

return this;

}

public Integer queryMapIndex() {

return queryMapIndex;

}

public MethodMetadata queryMapIndex(Integer queryMapIndex) {

this.queryMapIndex = queryMapIndex;

return this;

}

public QueryMapEncoder queryMapEncoder() {

return queryMapEncoder;

}

public MethodMetadata queryMapEncoder(QueryMapEncoder queryMapEncoder) {

this.queryMapEncoder = queryMapEncoder;

return this;

}

@Experimental

public boolean alwaysEncodeBody() {

return alwaysEncodeBody;

}

@Experimental

MethodMetadata alwaysEncodeBody(boolean alwaysEncodeBody) {

this.alwaysEncodeBody = alwaysEncodeBody;

return this;

}

/** Type corresponding to {@link #bodyIndex()}. */

public Type bodyType() {

return bodyType;

}

public MethodMetadata bodyType(Type bodyType) {

this.bodyType = bodyType;

return this;

}

public RequestTemplate template() {

return template;

}

public List<String> formParams() {

return formParams;

}

public Map<Integer, Collection<String>> indexToName() {

return indexToName;

}

public Map<Integer, Boolean> indexToEncoded() {

return indexToEncoded;

}

/** If {@link #indexToExpander} is null, classes here will be instantiated by newInstance. */

public Map<Integer, Class<? extends Expander>> indexToExpanderClass() {

return indexToExpanderClass;

}

/**

* After {@link #indexToExpanderClass} is populated, this is set by contracts that support runtime

* injection.

public MethodMetadata indexToExpander(Map<Integer, Expander> indexToExpander) {

this.indexToExpander = indexToExpander;

return this;

}

/** When not null, this value will be used instead of {@link #indexToExpander()}. */

public Map<Integer, Expander> indexToExpander() {

return indexToExpander;

}

/**

* @param i individual parameter that should be ignored

* @return this instance

public MethodMetadata ignoreParamater(int i) {

this.parameterToIgnore.set(i);

return this;

}

public BitSet parameterToIgnore() {

return parameterToIgnore;

}

public MethodMetadata parameterToIgnore(BitSet parameterToIgnore) {

this.parameterToIgnore = parameterToIgnore;

return this;

}

/**

* @param i individual parameter to check if should be ignored

* @return true when field should not be processed by feign

public boolean shouldIgnoreParamater(int i) {

return parameterToIgnore.get(i);

}

/**

* @param index

* @return true if the parameter {@code index} was already consumed by a any {@link

* MethodMetadata} holder

public boolean isAlreadyProcessed(Integer index) {

return index.equals(urlIndex)

|| index.equals(bodyIndex)

|| index.equals(headerMapIndex)

|| index.equals(queryMapIndex)

|| indexToName.containsKey(index)

|| indexToExpanderClass.containsKey(index)

|| indexToEncoded.containsKey(index)

|| (indexToExpander != null && indexToExpander.containsKey(index))

|| parameterToIgnore.get(index);

}

public void ignoreMethod() {

this.ignored = true;

}

public boolean isIgnored() {

return ignored;

}

public boolean isBodyRequired() {

return bodyRequired;

}

public void setBodyRequired(boolean bodyRequired) {

this.bodyRequired = bodyRequired;

}

@Experimental

public MethodMetadata targetType(Class<?> targetType) {

this.targetType = targetType;

return this;

}

@Experimental

public Class<?> targetType() {

return targetType;

}

@Experimental

public MethodMetadata method(Method method) {

this.method = method;

return this;

}

@Experimental

public Method method() {

return method;

}

public void addWarning(String warning) {

warnings.add(warning);

}

public String warnings() {

return warnings.stream().collect(Collectors.joining("\n- ", "\nWarnings:\n- ", ""));

}

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