Java PageReader.nextRecord方法代码示例

import org.embulk.spi.PageReader; //导入方法依赖的package包/类
private List<Object[]> filter(PluginTask task, Schema inputSchema, Object ... objects)
{
    TestPageBuilderReader.MockPageOutput output = new TestPageBuilderReader.MockPageOutput();
    Schema outputSchema = BuildJsonFilterPlugin.buildOutputSchema(task, inputSchema);
    PageBuilder pageBuilder = new PageBuilder(runtime.getBufferAllocator(), outputSchema, output);
    PageReader pageReader = new PageReader(inputSchema);
    BuildJsonVisitorImpl visitor = new BuildJsonVisitorImpl(task, inputSchema, outputSchema, pageReader, pageBuilder);

    List<Page> pages = PageTestUtils.buildPage(runtime.getBufferAllocator(), inputSchema, objects);
    for (Page page : pages) {
        pageReader.setPage(page);

        while (pageReader.nextRecord()) {
            outputSchema.visitColumns(visitor);
            pageBuilder.addRecord();
        }
    }
    pageBuilder.finish();
    pageBuilder.close();
    return Pages.toObjects(outputSchema, output.pages);
}
 

import org.embulk.spi.PageReader; //导入方法依赖的package包/类
private List<Object[]> filter(PluginTask task, Schema inputSchema, Object ... objects)
{
    MockPageOutput output = new MockPageOutput();
    Schema outputSchema = ColumnFilterPlugin.buildOutputSchema(task, inputSchema);
    PageBuilder pageBuilder = new PageBuilder(runtime.getBufferAllocator(), outputSchema, output);
    PageReader pageReader = new PageReader(inputSchema);
    ColumnVisitorImpl visitor = new ColumnVisitorImpl(task, inputSchema, outputSchema, pageReader, pageBuilder);

    List<Page> pages = PageTestUtils.buildPage(runtime.getBufferAllocator(), inputSchema, objects);
    for (Page page : pages) {
        pageReader.setPage(page);

        while (pageReader.nextRecord()) {
            outputSchema.visitColumns(visitor);
            pageBuilder.addRecord();
        }
    }
    pageBuilder.finish();
    pageBuilder.close();
    return Pages.toObjects(outputSchema, output.pages);
}
 

import org.embulk.spi.PageReader; //导入方法依赖的package包/类
@Test
public void testOpen(final @Mocked PageReader reader, final @Mocked PageBuilder builder, final @Mocked Page page) throws Exception {
    new NonStrictExpectations() {{
        taskSource.loadTask(PluginTask.class); result = task;
        task.getDelimiter(); result = "";
        reader.nextRecord(); result = true; result = false;
    }};

    SpeedometerFilterPlugin plugin = new SpeedometerFilterPlugin();
    PageOutput output = plugin.open(taskSource, schema, schema, inPageOutput);
    output.add(page);

    new Verifications() {{
        taskSource.loadTask(PluginTask.class); times = 1;
        builder.addRecord(); times = 1;
        builder.finish(); times = 0;
        reader.nextRecord(); times = 2;
        reader.setPage(page); times = 1;
        schema.visitColumns(withInstanceOf(ColumnVisitor.class)); times = 1;
    }};
}
 

import org.embulk.spi.PageReader; //导入方法依赖的package包/类
private static PageReader buildPageReader(Schema schema, final Object... objects)
{
    PageReader pageReader = new PageReader(schema);
    List<Page> pages = PageTestUtils.buildPage(runtime.getBufferAllocator(), schema, objects);
    for (Page page : pages) {
        pageReader.setPage(page);
    }
    pageReader.nextRecord();
    return pageReader;
}
 

import org.embulk.spi.PageReader; //导入方法依赖的package包/类
@Override
public PageOutput open(final TaskSource taskSource, final Schema inputSchema,
        final Schema outputSchema, final PageOutput output)
{
    final PluginTask task = taskSource.loadTask(PluginTask.class);
    final boolean orCondition = task.getCondition().toLowerCase().equals("or");
    final PageReader pageReader = new PageReader(inputSchema);
    final PageBuilder pageBuilder = new PageBuilder(Exec.getBufferAllocator(), outputSchema, output);

    final AbstractGuardColumnVisitor guradVisitor;
    if (task.getWhere().isPresent()) {
        ParserExp parserExp = new Parser(inputSchema).parse(task.getWhere().get());
        guradVisitor = new GuardColumnVisitorWhereImpl(task, inputSchema, outputSchema, pageReader, parserExp);
    }
    else if (orCondition) {
        guradVisitor = new GuardColumnVisitorOrImpl(task, inputSchema, outputSchema, pageReader);
    }
    else {
        guradVisitor = new GuardColumnVisitorAndImpl(task, inputSchema, outputSchema, pageReader);
    }

    final BuilderColumnVisitorImpl builderVisitor;
    builderVisitor = new BuilderColumnVisitorImpl(task, inputSchema, outputSchema, pageReader, pageBuilder);

    return new PageOutput() {
        @Override
        public void finish()
        {
            pageBuilder.finish();
        }

        @Override
        public void close()
        {
            pageBuilder.close();
        }

        @Override
        public void add(Page page)
        {
            pageReader.setPage(page);

            while (pageReader.nextRecord()) {
                if (guradVisitor.visitColumns(inputSchema)) {
                    // output.add(page); did not work, double release() error occurred. We need to copy from reader to builder...
                    outputSchema.visitColumns(builderVisitor);
                    pageBuilder.addRecord();
                }
            }
        }
    };
}