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ExecutionInput.java
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package graphql;
import org.dataloader.DataLoaderRegistry;
import java.util.Collections;
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 root;
private final Map<String, Object> variables;
private final DataLoaderRegistry dataLoaderRegistry;
public ExecutionInput(String query, String operationName, Object context, Object root, Map<String, Object> variables) {
this(query, operationName, context, root, variables, new DataLoaderRegistry());
}
@Internal
private ExecutionInput(String query, String operationName, Object context, Object root, Map<String, Object> variables, DataLoaderRegistry dataLoaderRegistry) {
this.query = query;
this.operationName = operationName;
this.context = context;
this.root = root;
this.variables = variables;
this.dataLoaderRegistry = dataLoaderRegistry;
}
/**
* @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 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;
}
/**
* 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)
.root(this.root)
.dataLoaderRegistry(this.dataLoaderRegistry)
.variables(this.variables);
builderConsumer.accept(builder);
return builder.build();
}
@Override
public String toString() {
return "ExecutionInput{" +
"query='" + query + '\'' +
", operationName='" + operationName + '\'' +
", context=" + context +
", root=" + root +
", variables=" + variables +
", dataLoaderRegistry=" + dataLoaderRegistry +
'}';
}
/**
* @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();
private Object root;
private Map<String, Object> variables = Collections.emptyMap();
private DataLoaderRegistry dataLoaderRegistry = new DataLoaderRegistry();
public Builder query(String query) {
this.query = query;
return this;
}
public Builder operationName(String operationName) {
this.operationName = operationName;
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 = variables;
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 ExecutionInput build() {
return new ExecutionInput(query, operationName, context, root, variables, dataLoaderRegistry);
}
}
}