net.thisptr.jackson.jq.internal.tree.fieldaccess.resolved.ResolvedIndexFieldAccess Maven / Gradle / Ivy
package net.thisptr.jackson.jq.internal.tree.fieldaccess.resolved;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import net.thisptr.jackson.jq.Scope;
import net.thisptr.jackson.jq.exception.JsonQueryException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.NullNode;
public class ResolvedIndexFieldAccess extends ResolvedFieldAccess {
private List indices;
public ResolvedIndexFieldAccess(final boolean permissive, final List indices) {
super(permissive);
this.indices = indices;
}
@Override
public List apply(final Scope scope, final JsonNode in) throws JsonQueryException {
final List out = new ArrayList<>();
for (final long _index : indices) {
if (in.isArray()) {
final long index = _index < 0 ? _index + in.size() : _index;
if (0 <= index && index < in.size()) {
out.add(in.get((int) index));
} else {
out.add(NullNode.getInstance());
}
} else if (in.isNull()) {
out.add(NullNode.getInstance());
} else {
if (!permissive)
throw JsonQueryException.format("Cannot index %s with number", in.getNodeType());
}
}
return out;
}
public List indices() {
return Collections.unmodifiableList(indices);
}
}