Examples of org.codehaus.jackson.JsonParser.nextFieldName()

org.codehaus.jackson.JsonParser.nextFieldName()
Method that fetches next token (as if calling {@link #nextToken}) and verifies whether it is {@link JsonToken#FIELD_NAME} with specified nameand returns result of that comparison. It is functionally equivalent to:
```
 return (nextToken() == JsonToken.FIELD_NAME) && str.getValue().equals(getCurrentName()); 
```
but may be faster for parser to verify, and can therefore be used if caller expects to get such a property name from input next. @param str Property name to compare next token to (if next token is JsonToken.FIELD_NAME) @since 1.9




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78             jf.createJsonParser(new ByteArrayInputStream(DOC.getBytes("UTF-8")))
            : jf.createJsonParser(new StringReader(DOC));
        SerializableString NAME = new SerializedString("name");
        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.START_OBJECT, jp.getCurrentToken());
        assertTrue(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals(NAME.getValue(), jp.getCurrentName());
        assertEquals(NAME.getValue(), jp.getText());
        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_NUMBER_INT, jp.getCurrentToken());

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82         assertToken(JsonToken.START_OBJECT, jp.getCurrentToken());
        assertTrue(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals(NAME.getValue(), jp.getCurrentName());
        assertEquals(NAME.getValue(), jp.getText());
        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_NUMBER_INT, jp.getCurrentToken());
        assertEquals(123, jp.getIntValue());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());

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86         assertEquals(NAME.getValue(), jp.getText());
        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_NUMBER_INT, jp.getCurrentToken());
        assertEquals(123, jp.getIntValue());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals("name2", jp.getCurrentName());
        assertToken(JsonToken.VALUE_NUMBER_INT, jp.nextToken());


        assertFalse(jp.nextFieldName(NAME));

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91         assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals("name2", jp.getCurrentName());
        assertToken(JsonToken.VALUE_NUMBER_INT, jp.nextToken());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals("x", jp.getCurrentName());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_STRING, jp.getCurrentToken());

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95 
        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.FIELD_NAME, jp.getCurrentToken());
        assertEquals("x", jp.getCurrentName());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_STRING, jp.getCurrentToken());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.END_OBJECT, jp.getCurrentToken());


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98         assertEquals("x", jp.getCurrentName());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.VALUE_STRING, jp.getCurrentToken());


        assertFalse(jp.nextFieldName(NAME));
        assertToken(JsonToken.END_OBJECT, jp.getCurrentToken());


        assertFalse(jp.nextFieldName(NAME));
        assertNull(jp.getCurrentToken());


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129         }
        JsonParser parser = mapper.getJsonFactory().createJsonParser(new InputStreamReader(in, charset));
        if(parser.nextToken() != JsonToken.START_OBJECT) { //start object
            throw new IOException("JSON serialized AnalyzedTexts MUST use a JSON Object as Root!");
        }
        if(!parser.nextFieldName(new SerializedString("spans"))){
            throw new IOException("JSON serialized AnalyzedText MUST define the 'spans' field as first entry "
                + "in the root JSON object!");
        }
        if(parser.nextValue() != JsonToken.START_ARRAY){
            throw new IOException("The value of the 'span' field MUST BE an Json Array!");

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135         }
        JsonParser parser = mapper.getJsonFactory().createJsonParser(new InputStreamReader(in, charset));
        if(parser.nextToken() != JsonToken.START_OBJECT) { //start object
            throw new IOException("JSON serialized AnalyzedTexts MUST use a JSON Object as Root!");
        }
        if(!parser.nextFieldName(new SerializedString("spans"))){
            throw new IOException("JSON serialized AnalyzedText MUST define the 'spans' field as first entry "
                + "in the root JSON object!");
        }
        if(parser.nextValue() != JsonToken.START_ARRAY){
            throw new IOException("The value of the 'span' field MUST BE an Json Array!");

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