Examples with IonNull com.amazon.ion.IonNull used on opensource projects

Example 1 with IonNull

use of com.amazon.ion.IonNull in project ion-java by amzn.

the class IonWriterTestCase method testWriteToWithFieldName.

@Test
public void testWriteToWithFieldName() throws Exception {
    IonStruct s = system().newEmptyStruct();
    IonNull n = s.add("f").newNull();
    iw = makeWriter();
    n.writeTo(iw);
    iw.stepIn(IonType.STRUCT);
    {
        n.writeTo(iw);
        iw.setFieldName("g");
        n.writeTo(iw);
    }
    iw.stepOut();
    IonReader reader = reread();
    assertEquals(IonType.NULL, reader.next());
    assertEquals(IonType.STRUCT, reader.next());
    assertIonEquals(oneValue("{f:null, g:null}"), system().newValue(reader));
    assertNull(reader.next());
}

Example 2 with IonNull

use of com.amazon.ion.IonNull in project ion-java by amzn.

the class _Private_CurriedValueFactory method newNull.

// -------------------------------------------------------------------------
public IonNull newNull() {
    IonNull v = myFactory.newNull();
    handle(v);
    return v;
}

Example 3 with IonNull

use of com.amazon.ion.IonNull in project ion-java by amzn.

the class PrinterTest method testPrintingAnnotations.

// =========================================================================
// Test cases
@Test
public void testPrintingAnnotations() throws Exception {
    IonNull value = (IonNull) oneValue("an::$0::null");
    checkRendering("an::$0::null", value);
    value.addTypeAnnotation("+");
    value.addTypeAnnotation("\u0000");
    value.addTypeAnnotation("$0");
    checkRendering("an::$0::'+'::'\\0'::'$0'::null", value);
    myPrinter.setPrintSymbolAsString(true);
    checkRendering("an::$0::'+'::'\\0'::'$0'::null", value);
    myPrinter.setPrintStringAsJson(true);
    checkRendering("an::$0::'+'::'\\0'::'$0'::null", value);
    myPrinter.setPrintSymbolAsString(false);
    myPrinter.setPrintStringAsJson(false);
    myPrinter.setSkipAnnotations(true);
    checkRendering("null", value);
    myPrinter.setSkipAnnotations(false);
    IonSexp s = system().newEmptySexp();
    s.add(value);
    checkRendering("(an::$0::'+'::'\\0'::'$0'::null)", s);
    myPrinter.setPrintSymbolAsString(true);
    checkRendering("(an::$0::'+'::'\\0'::'$0'::null)", s);
    myPrinter.setPrintStringAsJson(true);
    checkRendering("(an::$0::'+'::'\\0'::'$0'::null)", s);
    value.setTypeAnnotations("boo", "boo");
    checkRendering("boo::boo::null", value);
}

Example 4 with IonNull

use of com.amazon.ion.IonNull in project ion-java by amzn.

the class PrinterTest method testPrintingNull.

@Test
public void testPrintingNull() throws Exception {
    IonNull value = system().newNull();
    checkNullRendering("null", value);
    value.addTypeAnnotation("an");
    checkRendering("an::null", value);
}

Example 5 with IonNull

use of com.amazon.ion.IonNull in project amazon-qldb-dmv-sample-java by aws-samples.

the class InsertIonTypes method main.

public static void main(final String... args) {
    final IonBlob ionBlob = Constants.SYSTEM.newBlob("hello".getBytes());
    final IonBool ionBool = Constants.SYSTEM.newBool(true);
    final IonClob ionClob = Constants.SYSTEM.newClob("{{'This is a CLOB of text.'}}".getBytes());
    final IonDecimal ionDecimal = Constants.SYSTEM.newDecimal(0.1);
    final IonFloat ionFloat = Constants.SYSTEM.newFloat(0.2);
    final IonInt ionInt = Constants.SYSTEM.newInt(1);
    final IonList ionList = Constants.SYSTEM.newList(new int[] { 1, 2 });
    final IonNull ionNull = Constants.SYSTEM.newNull();
    final IonSexp ionSexp = Constants.SYSTEM.newSexp(new int[] { 2, 3 });
    final IonString ionString = Constants.SYSTEM.newString("string");
    final IonStruct ionStruct = Constants.SYSTEM.newEmptyStruct();
    ionStruct.put("brand", Constants.SYSTEM.newString("ford"));
    final IonSymbol ionSymbol = Constants.SYSTEM.newSymbol("abc");
    final IonTimestamp ionTimestamp = Constants.SYSTEM.newTimestamp(Timestamp.now());
    final IonBlob ionNullBlob = Constants.SYSTEM.newNullBlob();
    final IonBool ionNullBool = Constants.SYSTEM.newNullBool();
    final IonClob ionNullClob = Constants.SYSTEM.newNullClob();
    final IonDecimal ionNullDecimal = Constants.SYSTEM.newNullDecimal();
    final IonFloat ionNullFloat = Constants.SYSTEM.newNullFloat();
    final IonInt ionNullInt = Constants.SYSTEM.newNullInt();
    final IonList ionNullList = Constants.SYSTEM.newNullList();
    final IonSexp ionNullSexp = Constants.SYSTEM.newNullSexp();
    final IonString ionNullString = Constants.SYSTEM.newNullString();
    final IonStruct ionNullStruct = Constants.SYSTEM.newNullStruct();
    final IonSymbol ionNullSymbol = Constants.SYSTEM.newNullSymbol();
    final IonTimestamp ionNullTimestamp = Constants.SYSTEM.newNullTimestamp();
    ConnectToLedger.getDriver().execute(txn -> {
        CreateTable.createTable(txn, TABLE_NAME);
        final Document document = new Document(Constants.SYSTEM.newString("val"));
        InsertDocument.insertDocuments(txn, TABLE_NAME, Collections.singletonList(document));
        updateRecordAndVerifyType(txn, ionBlob);
        updateRecordAndVerifyType(txn, ionBool);
        updateRecordAndVerifyType(txn, ionClob);
        updateRecordAndVerifyType(txn, ionDecimal);
        updateRecordAndVerifyType(txn, ionFloat);
        updateRecordAndVerifyType(txn, ionInt);
        updateRecordAndVerifyType(txn, ionList);
        updateRecordAndVerifyType(txn, ionNull);
        updateRecordAndVerifyType(txn, ionSexp);
        updateRecordAndVerifyType(txn, ionString);
        updateRecordAndVerifyType(txn, ionStruct);
        updateRecordAndVerifyType(txn, ionSymbol);
        updateRecordAndVerifyType(txn, ionTimestamp);
        updateRecordAndVerifyType(txn, ionNullBlob);
        updateRecordAndVerifyType(txn, ionNullBool);
        updateRecordAndVerifyType(txn, ionNullClob);
        updateRecordAndVerifyType(txn, ionNullDecimal);
        updateRecordAndVerifyType(txn, ionNullFloat);
        updateRecordAndVerifyType(txn, ionNullInt);
        updateRecordAndVerifyType(txn, ionNullList);
        updateRecordAndVerifyType(txn, ionNullSexp);
        updateRecordAndVerifyType(txn, ionNullString);
        updateRecordAndVerifyType(txn, ionNullStruct);
        updateRecordAndVerifyType(txn, ionNullSymbol);
        updateRecordAndVerifyType(txn, ionNullTimestamp);
        deleteTable(txn, TABLE_NAME);
    });
}