### Question:
BagriXQItemAccessor extends BagriXQCloseable implements XQItemAccessor { @Override public byte getByte() throws XQException { checkState(ex_item_closed); return (byte) convertDecimal(Byte.MIN_VALUE, Byte.MAX_VALUE, "byte"); } BagriXQItemAccessor(XQProcessor xqProcessor); @Override boolean getBoolean(); @Override byte getByte(); @Override double getDouble(); @Override float getFloat(); @Override int getInt(); @Override XQItemType getItemType(); @Override String getAtomicValue(); @Override long getLong(); @Override Node getNode(); @Override URI getNodeUri(); @Override Object getObject(); @Override XMLStreamReader getItemAsStream(); @Override String getItemAsString(Properties props); @Override short getShort(); @Override boolean instanceOf(XQItemType type); @Override void writeItem(OutputStream os, Properties props); @Override void writeItem(Writer ow, Properties props); @Override void writeItemToSAX(ContentHandler saxhdlr); @Override void writeItemToResult(Result result);  }### Answer:
@Test public void testGetByte() throws XQException { XQExpression xqe = xqc.createExpression(); XQSequence xqs = xqe.executeQuery("'1'"); xqs.next(); try { xqs.getByte(); fail("A-XQIA-1.1: conversion to byte should fail"); } catch (XQException e) { } xqe.close(); xqe = xqc.createExpression(); xqs = xqe.executeQuery("xs:byte('1')"); xqs.next(); Object o = xqs.getObject(); assertTrue("expected Byte but got " + o.getClass().getName(), o instanceof Byte); xqe.close(); XQPreparedExpression xqpe = xqc.prepareExpression("declare variable $v external; $v"); try { xqpe.bindByte(new QName("v"), (byte)1, xqc.createAtomicType(XQItemType.XQBASETYPE_INTEGER)); } catch (XQException e) { fail("A-XQDC-1.7: bindByte() failed with message: " + e.getMessage()); } xqs = xqpe.executeQuery(); xqs.next(); assertEquals("A-XQDC-1.7: Successful bindXXX.", XQItemType.XQITEMKIND_ATOMIC, xqs.getItemType().getItemKind()); assertEquals("A-XQDC-1.7: Successful bindXXX.", XQItemType.XQBASETYPE_INTEGER, xqs.getItemType().getBaseType()); assertEquals("A-XQDC-1.7: Successful bindXXX.", "1", xqs.getAtomicValue()); xqpe.close(); }