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Added recordedByID into hdfs query builder and etc.
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77 changes: 77 additions & 0 deletions
77
occurrence-common/src/main/java/org/gbif/occurrence/common/json/ListStringSerDeserUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package org.gbif.occurrence.common.json; | ||
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| import java.io.IOException; | ||
| import java.util.List; | ||
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| import org.codehaus.jackson.map.DeserializationConfig; | ||
| import org.codehaus.jackson.map.ObjectMapper; | ||
| import org.codehaus.jackson.map.SerializationConfig; | ||
| import org.codehaus.jackson.map.annotate.JsonSerialize; | ||
| import org.codehaus.jackson.map.type.CollectionType; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import com.google.common.base.Throwables; | ||
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| /** | ||
| * Utility class to serialize and deserialize Strings instances from/to JSON. | ||
| */ | ||
| public class ListStringSerDeserUtils { | ||
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| private static final Logger LOG = LoggerFactory.getLogger(ListStringSerDeserUtils.class); | ||
| private static final String SER_ERROR_MSG = "Unable to serialize list of string objects to JSON"; | ||
| private static final String DESER_ERROR_MSG = "Unable to deserialize String into list of string objects"; | ||
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| private static final ObjectMapper MAPPER = new ObjectMapper(); | ||
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| static { | ||
| // Don't change this section, methods used here guarantee backwards compatibility with Jackson 1.8.8 | ||
| MAPPER.configure(DeserializationConfig.Feature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT, true); | ||
| MAPPER.configure(SerializationConfig.Feature.INDENT_OUTPUT, true); | ||
| MAPPER.getSerializationConfig().setSerializationInclusion(JsonSerialize.Inclusion.ALWAYS); | ||
| } | ||
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| private static final CollectionType LIST_STRINGS_TYPE = | ||
| MAPPER.getTypeFactory().constructCollectionType(List.class, String.class); | ||
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| private ListStringSerDeserUtils() { | ||
| // private constructor | ||
| } | ||
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| /** | ||
| * Converts the list of string objects into a JSON string. | ||
| */ | ||
| public static String toJson(List<String> strings) { | ||
| try { | ||
| if (strings != null && !strings.isEmpty()) { | ||
| return MAPPER.writeValueAsString(strings); | ||
| } | ||
| } catch (IOException e) { | ||
| logAndRethrow(SER_ERROR_MSG, e); | ||
| } | ||
| return ""; | ||
| } | ||
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| /** | ||
| * Converts a Json string into a list of string objects. | ||
| */ | ||
| public static List<String> fromJson(String strings) { | ||
| try { | ||
| return MAPPER.readValue(strings, LIST_STRINGS_TYPE); | ||
| } catch (IOException e) { | ||
| logAndRethrow(DESER_ERROR_MSG, e); | ||
| } | ||
| return null; | ||
| } | ||
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| /** | ||
| * Logs an error and re-throws the exception. | ||
| */ | ||
| private static void logAndRethrow(String message, Throwable throwable) { | ||
| LOG.error(message, throwable); | ||
| Throwables.propagate(throwable); | ||
| } | ||
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| } |
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