Package com.fasterxml.jackson.databind.node

Examples of com.fasterxml.jackson.databind.node.ArrayNode

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    /**
     * Test to verify [JACKSON-227]
     */
    public void testNullChecking()
    {
        ArrayNode a1 = JsonNodeFactory.instance.arrayNode();
        ArrayNode a2 = JsonNodeFactory.instance.arrayNode();
        // used to throw NPE before fix:
        a1.addAll(a2);
        assertEquals(0, a1.size());
        assertEquals(0, a2.size());

        a2.addAll(a1);
        assertEquals(0, a1.size());
        assertEquals(0, a2.size());
    }
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     * Another test to verify [JACKSON-227]...
     */
    public void testNullChecking2()
    {
        ObjectMapper mapper = new ObjectMapper();
        ArrayNode src = mapper.createArrayNode();
        ArrayNode dest = mapper.createArrayNode();
        src.add("element");
        dest.addAll(src);
    }
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        dest.addAll(src);
    }
   
    public void testParser() throws Exception
    {
        ArrayNode n = new ArrayNode(JsonNodeFactory.instance);
        n.add(123);
        TreeTraversingParser p = new TreeTraversingParser(n, null);
        p.setCodec(null);
        assertNull(p.getCodec());
        assertNotNull(p.getParsingContext());
        assertNotNull(p.getTokenLocation());
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public class TestArrayNode
    extends BaseMapTest
{
    public void testBasics() throws IOException
    {
        ArrayNode n = new ArrayNode(JsonNodeFactory.instance);
        assertStandardEquals(n);
        assertFalse(n.elements().hasNext());
        assertFalse(n.fieldNames().hasNext());
        TextNode text = TextNode.valueOf("x");
        n.add(text);
        assertEquals(1, n.size());
        assertFalse(0 == n.hashCode());
        assertTrue(n.elements().hasNext());
        // no field names for arrays
        assertFalse(n.fieldNames().hasNext());
        assertNull(n.get("x")); // not used with arrays
        assertTrue(n.path("x").isMissingNode());
        assertSame(text, n.get(0));

        // single element, so:
        assertFalse(n.has("field"));
        assertFalse(n.hasNonNull("field"));
        assertTrue(n.has(0));
        assertTrue(n.hasNonNull(0));
        assertFalse(n.has(1));
        assertFalse(n.hasNonNull(1));
       
        // add null node too
        n.add((JsonNode) null);
        assertEquals(2, n.size());
        assertTrue(n.get(1).isNull());
        assertTrue(n.has(1));
        assertFalse(n.hasNonNull(1));
        // change to text
        n.set(1, text);
        assertSame(text, n.get(1));
        n.set(0, null);
        assertTrue(n.get(0).isNull());

        // and finally, clear it all
        ArrayNode n2 = new ArrayNode(JsonNodeFactory.instance);
        n2.add("foobar");
        assertFalse(n.equals(n2));
        n.addAll(n2);
        assertEquals(3, n.size());

        assertFalse(n.get(0).isTextual());
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        jg.close();
    }

    public void testAdds()
    {
        ArrayNode n = new ArrayNode(JsonNodeFactory.instance);
        assertNotNull(n.addArray());
        assertNotNull(n.addObject());
        n.addPOJO("foobar");
        n.add(1);
        n.add(1L);
        n.add(0.5);
        n.add(0.5f);
        assertEquals(7, n.size());

        assertNotNull(n.insertArray(0));
        assertNotNull(n.insertObject(0));
        n.insertPOJO(2, "xxx");
        assertEquals(10, n.size());
    }
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    Level child;
    Level parent;
    String value = null;
    parent = stack.peek();
    if( parent.isArray() ) {
      ArrayNode array = (ArrayNode)parent.node;
      array.add( parser.getText() );
      if( bufferingLevel == null ) {
        value = filterStreamValue( parent );
        array.set( array.size()-1, new TextNode( value ) );
      } else {
        array.removeAll();
      }
    } else {
      child = stack.pop();
      parent = stack.peek();
      ((ObjectNode)parent.node ).put( child.field, parser.getText() );
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    Level child;
    Level parent;
    parent = stack.peek();
    if( parent.isArray() ) {
      if( bufferingLevel != null ) {
        ArrayNode array = (ArrayNode)parent.node;
        array.add( parser.getDecimalValue() );
      }
    } else {
      child = stack.pop();
      if( bufferingLevel != null ) {
        parent = stack.peek();
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                while (parser.nextToken() != null) {
                    String name = parser.getCurrentName();
                    if ("rows".equals(name)) {
                        parser.nextToken();

                        ArrayNode rowsNode = objectMapper.readTree(parser);

                        for (int i = 0; i < rowsNode.size(); i++) {
                            JsonNode documentNode = rowsNode.get(i);

                            // Id
                            JsonNode idNode = documentNode.get("id");
                            String id = (idNode != null) ? idNode.asText() : null;
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            return flattenResults();
        }
       
        public <T> Collection<T> getResultsFromAllPhases(Class<T> resultType)
        {
            ArrayNode flat = flattenResults();
            ObjectMapper mapper = new ObjectMapper();
            try
            {
                return mapper.readValue(flat.toString(), mapper.getTypeFactory().constructCollectionType(Collection.class, resultType));
            }
            catch (IOException ex)
            {
                throw new ConversionException("Could not convert Mapreduce response",ex);
            }
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        }
       
        private ArrayNode flattenResults()
        {
            final JsonNodeFactory factory = JsonNodeFactory.instance;
            ArrayNode flatArray = factory.arrayNode();
            for (Map.Entry<Integer,ArrayNode> entry : results.entrySet())
            {
                flatArray.addAll(entry.getValue());
            }
            return flatArray;
        }
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