com.redhat.lightblue.assoc.ep.Copy Maven / Gradle / Ivy
/*
Copyright 2013 Red Hat, Inc. and/or its affiliates.
This file is part of lightblue.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
package com.redhat.lightblue.assoc.ep;
import java.util.List;
import java.util.stream.Stream;
import java.util.stream.Collectors;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.databind.node.JsonNodeFactory;
import com.redhat.lightblue.crud.DocumentStream;
/**
* Copies the results from another step
*/
public class Copy extends AbstractSearchStep {
private final Source source;
public Copy(ExecutionBlock block, Source source) {
super(block);
this.source = source;
}
@Override
public StepResult getResults(ExecutionContext ctx) {
StepResult result=new StepResultWrapper(source.getStep().getResults(ctx)) {
@Override
public Stream stream() {
// Create new documents for each document in the source. This will
// create the correct slots based on this execution block
return super.stream().map(d -> {
return new ResultDocument(block, d.getDoc());
});
}
};
if(recordResultSetSize) {
List list=result.stream().collect(Collectors.toList());
result=new ListStepResult(list);
ctx.setMatchCount(list.size());
}
return result;
}
@Override
protected final DocumentStream getSearchResults(ExecutionContext ctx) {
// This should be called at all
throw new IllegalStateException();
}
@Override
public JsonNode toJson() {
ObjectNode node = JsonNodeFactory.instance.objectNode();
node.set("copy", source.getStep().toJson());
return node;
}
@Override
public JsonNode explain(ExecutionContext ctx) {
ObjectNode node = JsonNodeFactory.instance.objectNode();
node.set("copy", source.getStep().explain(ctx));
return node;
}
}
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