net.thisptr.jackson.jq.internal.tree.fieldaccess.resolved.ResolvedStringFieldAccess 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 net.thisptr.jackson.jq.internal.misc.JsonNodeUtils;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.NullNode;
public class ResolvedStringFieldAccess extends ResolvedFieldAccess {
private List keys;
public List keys() {
return Collections.unmodifiableList(keys);
}
public ResolvedStringFieldAccess(final boolean permissive, final List keys) {
super(permissive);
this.keys = keys;
}
@Override
public List apply(final Scope scope, final JsonNode in) throws JsonQueryException {
final List out = new ArrayList<>();
for (final String key : keys) {
if (in.isNull()) {
out.add(NullNode.getInstance());
} else if (in.isObject()) {
final JsonNode n = in.get(key);
out.add(n == null ? NullNode.getInstance() : n);
} else {
if (!permissive)
throw new JsonQueryException(String.format("Cannot index %s with string \"%s\"", JsonNodeUtils.typeOf(in), key));
}
}
return out;
}
}