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ExecutionId.java
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58 lines (46 loc) · 1.19 KB
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package graphql.execution;
import graphql.Assert;
import java.util.UUID;
/**
* This opaque identifier is used to identify a unique query execution
*/
public class ExecutionId {
/**
* Create an unique identifier from the given string
*
* @return a query execution identifier
*/
public static ExecutionId generate() {
return new ExecutionId(UUID.randomUUID().toString());
}
/**
* Create an identifier from the given string
*
* @param id the string to wrap
*
* @return a query identifier
*/
public static ExecutionId from(String id) {
return new ExecutionId(id);
}
private final String id;
private ExecutionId(String id) {
Assert.assertNotNull(id, "You must provided a non null id");
this.id = id;
}
@Override
public String toString() {
return id;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ExecutionId that = (ExecutionId) o;
return id.equals(that.id);
}
@Override
public int hashCode() {
return id.hashCode();
}
}