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ExecutionInput.java
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package graphql;
import graphql.cachecontrol.CacheControl;
import graphql.execution.ExecutionId;
import graphql.execution.instrumentation.dataloader.DataLoaderDispatcherInstrumentationState;
import org.dataloader.DataLoaderRegistry;
import java.util.Collections;
import java.util.Locale;
import java.util.Map;
import java.util.function.Consumer;
import java.util.function.UnaryOperator;
import static graphql.Assert.assertNotNull;
/**
* This represents the series of values that can be input on a graphql query execution
*/
@PublicApi
public class ExecutionInput {
private final String query;
private final String operationName;
private final Object context;
private final Object localContext;
private final Object root;
private final Map<String, Object> variables;
private final DataLoaderRegistry dataLoaderRegistry;
private final CacheControl cacheControl;
private final ExecutionId executionId;
private final Locale locale;
@Internal
private ExecutionInput(String query, String operationName, Object context, Object root, Map<String, Object> variables, DataLoaderRegistry dataLoaderRegistry, CacheControl cacheControl, ExecutionId executionId, Locale locale, Object localContext) {
this.query = assertNotNull(query, () -> "query can't be null");
this.operationName = operationName;
this.context = context;
this.root = root;
this.variables = variables;
this.dataLoaderRegistry = dataLoaderRegistry;
this.cacheControl = cacheControl;
this.executionId = executionId;
this.locale = locale;
this.localContext = localContext;
}
/**
* @return the query text
*/
public String getQuery() {
return query;
}
/**
* @return the name of the query operation
*/
public String getOperationName() {
return operationName;
}
/**
* @return the context object to pass to all data fetchers
*/
public Object getContext() {
return context;
}
/**
* @return the local context object to pass to all top level (i.e. query, mutation, subscription) data fetchers
*/
public Object getLocalContext() {
return localContext;
}
/**
* @return the root object to start the query execution on
*/
public Object getRoot() {
return root;
}
/**
* @return a map of variables that can be referenced via $syntax in the query
*/
public Map<String, Object> getVariables() {
return variables;
}
/**
* @return the data loader registry associated with this execution
*/
public DataLoaderRegistry getDataLoaderRegistry() {
return dataLoaderRegistry;
}
/**
* @return the cache control helper associated with this execution
*/
public CacheControl getCacheControl() {
return cacheControl;
}
/**
* @return Id that will be/was used to execute this operation.
*/
public ExecutionId getExecutionId() {
return executionId;
}
/**
* This returns the locale of this operation.
*
* @return the locale of this operation
*/
public Locale getLocale() {
return locale;
}
/**
* This helps you transform the current ExecutionInput object into another one by starting a builder with all
* the current values and allows you to transform it how you want.
*
* @param builderConsumer the consumer code that will be given a builder to transform
* @return a new ExecutionInput object based on calling build on that builder
*/
public ExecutionInput transform(Consumer<Builder> builderConsumer) {
Builder builder = new Builder()
.query(this.query)
.operationName(this.operationName)
.context(this.context)
.localContext(this.localContext)
.root(this.root)
.dataLoaderRegistry(this.dataLoaderRegistry)
.cacheControl(this.cacheControl)
.variables(this.variables)
.executionId(this.executionId)
.locale(this.locale);
builderConsumer.accept(builder);
return builder.build();
}
@Override
public String toString() {
return "ExecutionInput{" +
"query='" + query + '\'' +
", operationName='" + operationName + '\'' +
", context=" + context +
", root=" + root +
", variables=" + variables +
", dataLoaderRegistry=" + dataLoaderRegistry +
", executionId= " + executionId +
", locale= " + locale +
'}';
}
/**
* @return a new builder of ExecutionInput objects
*/
public static Builder newExecutionInput() {
return new Builder();
}
/**
* Creates a new builder of ExecutionInput objects with the given query
*
* @param query the query to execute
* @return a new builder of ExecutionInput objects
*/
public static Builder newExecutionInput(String query) {
return new Builder().query(query);
}
public static class Builder {
private String query;
private String operationName;
private Object context = GraphQLContext.newContext().build();
private Object localContext;
private Object root;
private Map<String, Object> variables = Collections.emptyMap();
//
// this is important - it allows code to later known if we never really set a dataloader and hence it can optimize
// dataloader field tracking away.
//
private DataLoaderRegistry dataLoaderRegistry = DataLoaderDispatcherInstrumentationState.EMPTY_DATALOADER_REGISTRY;
private CacheControl cacheControl = CacheControl.newCacheControl();
private Locale locale;
private ExecutionId executionId;
public Builder query(String query) {
this.query = assertNotNull(query, () -> "query can't be null");
return this;
}
public Builder operationName(String operationName) {
this.operationName = operationName;
return this;
}
/**
* A default one will be assigned, but you can set your own.
*
* @param executionId an execution id object
* @return this builder
*/
public Builder executionId(ExecutionId executionId) {
this.executionId = executionId;
return this;
}
/**
* Sets the locale to use for this operation
*
* @param locale the locale to use
*
* @return this builder
*/
public Builder locale(Locale locale) {
this.locale = locale;
return this;
}
/**
* Sets initial localContext in root data fetchers
* @return this builder
*/
public Builder localContext(Object localContext) {
this.localContext = localContext;
return this;
}
/**
* By default you will get a {@link GraphQLContext} object but you can set your own.
*
* @param context the context object to use
* @return this builder
*/
public Builder context(Object context) {
this.context = context;
return this;
}
public Builder context(GraphQLContext.Builder contextBuilder) {
this.context = contextBuilder.build();
return this;
}
public Builder context(UnaryOperator<GraphQLContext.Builder> contextBuilderFunction) {
GraphQLContext.Builder builder = GraphQLContext.newContext();
builder = contextBuilderFunction.apply(builder);
return context(builder.build());
}
public Builder root(Object root) {
this.root = root;
return this;
}
public Builder variables(Map<String, Object> variables) {
this.variables = assertNotNull(variables, () -> "variables map can't be null");
return this;
}
/**
* You should create new {@link org.dataloader.DataLoaderRegistry}s and new {@link org.dataloader.DataLoader}s for each execution. Do not
* re-use
* instances as this will create unexpected results.
*
* @param dataLoaderRegistry a registry of {@link org.dataloader.DataLoader}s
* @return this builder
*/
public Builder dataLoaderRegistry(DataLoaderRegistry dataLoaderRegistry) {
this.dataLoaderRegistry = assertNotNull(dataLoaderRegistry);
return this;
}
public Builder cacheControl(CacheControl cacheControl) {
this.cacheControl = assertNotNull(cacheControl);
return this;
}
public ExecutionInput build() {
return new ExecutionInput(query, operationName, context, root, variables, dataLoaderRegistry, cacheControl, executionId, locale, localContext);
}
}
}