Guava Collections之Table,Range,RangeMap

Table

public class TableExampleTest
{
    //ArrayTable
    //TreeBaseTable
    //HashBaseTable
    //ImmutableTable

    @Test
    public void test()
    {
        Table table = HashBasedTable.create();
        table.put("Language", "Java", "1.8");
        table.put("Language", "Scala", "2.3");
        table.put("Database", "Oracle", "12C");
        table.put("Database", "Mysql", "7.0");
        System.out.println(table);

        Map language = table.row("Language");
        assertThat(language.containsKey("Java"), is(true));
        //Map>
        assertThat(table.row("Language").get("Java"), equalTo("1.8"));
        Map result = table.column("Java");
        System.out.println(result);

        Set> cells = table.cellSet();
        System.out.println(cells);
    }
}

Range / RangMap

public class RangeExampleTest
{
    /**
     * {x|a<=x<=b}
     */
    @Test
    public void testClosedRange()
    {
        Range closedRange = Range.closed(0, 9);
        System.out.println(closedRange);

        assertThat(closedRange.contains(5), is(true));
        assertThat(closedRange.lowerEndpoint(), equalTo(0));
        assertThat(closedRange.upperEndpoint(), equalTo(9));
    }

    /**
     * {x|a openRange = Range.open(0, 9);
        System.out.println(openRange);

        assertThat(openRange.contains(5), is(true));

        assertThat(openRange.lowerEndpoint(), equalTo(0));
        assertThat(openRange.upperEndpoint(), equalTo(9));
        assertThat(openRange.contains(0), is(false));
        assertThat(openRange.contains(9), is(false));
    }

    /**
     * {x|a openClosedRange = Range.openClosed(0, 9);
        System.out.println(openClosedRange);

        assertThat(openClosedRange.contains(5), is(true));

        assertThat(openClosedRange.lowerEndpoint(), equalTo(0));
        assertThat(openClosedRange.upperEndpoint(), equalTo(9));
        assertThat(openClosedRange.contains(0), is(false));
        assertThat(openClosedRange.contains(9), is(true));
    }


    /**
     * {x|a<=x closedOpen = Range.closedOpen(0, 9);
        System.out.println(closedOpen);

        assertThat(closedOpen.contains(5), is(true));

        assertThat(closedOpen.lowerEndpoint(), equalTo(0));
        assertThat(closedOpen.upperEndpoint(), equalTo(9));
        assertThat(closedOpen.contains(0), is(true));
        assertThat(closedOpen.contains(9), is(false));
    }

    /**
     * {x|x>a}
     */
    @Test
    public void testGreaterThan()
    {
        Range range = Range.greaterThan(10);
        assertThat(range.contains(10), is(false));
        assertThat(range.contains(Integer.MAX_VALUE), is(true));
    }

    @Test
    public void testMapRange()
    {
        TreeMap treeMap = Maps.newTreeMap();

        treeMap.put("Scala", 1);
        treeMap.put("Guava", 2);
        treeMap.put("Java", 3);
        treeMap.put("Kafka", 4);
        System.out.println(treeMap);

        NavigableMap result = Maps.subMap(treeMap, Range.openClosed("Guava", "Java"));
        System.out.println(result);
    }

    @Test
    public void testOtherMethod()
    {
        Range atLeastRange = Range.atLeast(2);
        System.out.println(atLeastRange);
        assertThat(atLeastRange.contains(2), is(true));
        System.out.println(Range.lessThan(10));
        System.out.println(Range.atMost(5));
        System.out.println(Range.all());
        System.out.println(Range.downTo(10, BoundType.CLOSED));
        System.out.println(Range.upTo(10, BoundType.CLOSED));
    }

    @Test
    public void testRangeMap()
    {
        RangeMap gradeScale = TreeRangeMap.create();
        gradeScale.put(Range.closed(0, 60), "E");
        gradeScale.put(Range.closed(61, 70), "D");
        gradeScale.put(Range.closed(71, 80), "C");
        gradeScale.put(Range.closed(81, 90), "B");
        gradeScale.put(Range.closed(91, 100), "A");

        assertThat(gradeScale.get(77), equalTo("C"));
    }
}