Examples of org.codehaus.jackson.JsonNode.path()

org.codehaus.jackson.JsonNode.path()
This method is similar to {@link #get(String)}, except that instead of returning null if no such value exists (due to this node not being an object, or object not having value for the specified field), a "missing node" (node that returns true for {@link #isMissingNode}) will be returned. This allows for convenient and safe chained access via path calls.

    accessLevel = accessLevel.trim();
    JsonNode allInstitutionsObject = this.configContents.path("institutions");
    JsonNode institutionObject = allInstitutionsObject.path(institution);
    if (institutionObject.has("proxy")) {
      JsonNode proxyObject = institutionObject.path("proxy");
      ArrayNode accessNode = (ArrayNode) proxyObject.path("accessLevel");
      Iterator<JsonNode> accessIterator = accessNode.getElements();
      while (accessIterator.hasNext()){
        String currentValue = accessIterator.next().getTextValue();
        if (currentValue.equalsIgnoreCase(accessLevel)){
          return proxyObject.path(serviceKey).getTextValue();

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      ArrayNode accessNode = (ArrayNode) proxyObject.path("accessLevel");
      Iterator<JsonNode> accessIterator = accessNode.getElements();
      while (accessIterator.hasNext()){
        String currentValue = accessIterator.next().getTextValue();
        if (currentValue.equalsIgnoreCase(accessLevel)){
          return proxyObject.path(serviceKey).getTextValue();
        }
      }
      return null;
    
    } else {

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            if (token.startsWith("["))
            {
                if (o.isArray())
                {
                    int index = Integer.valueOf(token.substring(1, token.length() - 1));
                    o = o.path(index);
                }
                else
                {
                    throw new IllegalArgumentException("Current node is not an array, but expression is expecting one");
                }

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                    throw new IllegalArgumentException("Current node is not an array, but expression is expecting one");
                }
            }
            else
            {
                o = o.path(token);
            }


            if (o.isMissingNode())
            {
                throw new IllegalArgumentException("Not a valid element: " + token);

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        JsonNode propertiesSchema = root.get("properties");
        assertNotNull(propertiesSchema);
        JsonNode property1Schema = propertiesSchema.get("property1");
        assertNotNull(property1Schema);
        assertEquals("integer", property1Schema.get("type").asText());
        assertEquals(false, property1Schema.path("required").getBooleanValue());
        JsonNode property2Schema = propertiesSchema.get("property2");
        assertNotNull(property2Schema);
        assertEquals("string", property2Schema.get("type").asText());
        assertEquals(false, property2Schema.path("required").getBooleanValue());
        JsonNode property3Schema = propertiesSchema.get("property3");

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        assertEquals("integer", property1Schema.get("type").asText());
        assertEquals(false, property1Schema.path("required").getBooleanValue());
        JsonNode property2Schema = propertiesSchema.get("property2");
        assertNotNull(property2Schema);
        assertEquals("string", property2Schema.get("type").asText());
        assertEquals(false, property2Schema.path("required").getBooleanValue());
        JsonNode property3Schema = propertiesSchema.get("property3");
        assertNotNull(property3Schema);
        assertEquals("array", property3Schema.get("type").asText());
        assertEquals(false, property3Schema.path("required").getBooleanValue());
        assertEquals("string", property3Schema.get("items").get("type").asText());

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        assertEquals("string", property2Schema.get("type").asText());
        assertEquals(false, property2Schema.path("required").getBooleanValue());
        JsonNode property3Schema = propertiesSchema.get("property3");
        assertNotNull(property3Schema);
        assertEquals("array", property3Schema.get("type").asText());
        assertEquals(false, property3Schema.path("required").getBooleanValue());
        assertEquals("string", property3Schema.get("items").get("type").asText());
        JsonNode property4Schema = propertiesSchema.get("property4");
        assertNotNull(property4Schema);
        assertEquals("array", property4Schema.get("type").asText());
        assertEquals(false, property4Schema.path("required").getBooleanValue());

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        assertEquals(false, property3Schema.path("required").getBooleanValue());
        assertEquals("string", property3Schema.get("items").get("type").asText());
        JsonNode property4Schema = propertiesSchema.get("property4");
        assertNotNull(property4Schema);
        assertEquals("array", property4Schema.get("type").asText());
        assertEquals(false, property4Schema.path("required").getBooleanValue());
        assertEquals("number", property4Schema.get("items").get("type").asText());
    }


    /**
     * Additional unit test for verifying that schema object itself

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        if (props.isMissingNode()) {
            throw new JsonMappingException("no 'props' field found");
        }


        builder.allowSiblings(props.path(Constants.FL_SCHEMA_ALLOW_MULT).getBooleanValue());
        builder.lastWriteWins(props.path(Constants.FL_SCHEMA_LAST_WRITE_WINS).getBooleanValue());
        builder.nVal(props.path(Constants.FL_SCHEMA_NVAL).getIntValue());
        builder.backend(props.path(Constants.FL_SCHEMA_BACKEND).getTextValue());
        builder.smallVClock(props.path(Constants.FL_SCHEMA_SMALL_VCLOCK).getIntValue());
        builder.bigVClock(props.path(Constants.FL_SCHEMA_BIG_VCLOCK).getIntValue());

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        if (props.isMissingNode()) {
            throw new JsonMappingException("no 'props' field found");
        }


        builder.allowSiblings(props.path(Constants.FL_SCHEMA_ALLOW_MULT).getBooleanValue());
        builder.lastWriteWins(props.path(Constants.FL_SCHEMA_LAST_WRITE_WINS).getBooleanValue());
        builder.nVal(props.path(Constants.FL_SCHEMA_NVAL).getIntValue());
        builder.backend(props.path(Constants.FL_SCHEMA_BACKEND).getTextValue());
        builder.smallVClock(props.path(Constants.FL_SCHEMA_SMALL_VCLOCK).getIntValue());
        builder.bigVClock(props.path(Constants.FL_SCHEMA_BIG_VCLOCK).getIntValue());
        builder.youngVClock(props.path(Constants.FL_SCHEMA_YOUNG_VCLOCK).getLongValue());

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