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Java FileUtils.open方法代码示例

本文整理汇总了Java中org.h2.store.fs.FileUtils.open方法的典型用法代码示例。如果您正苦于以下问题：Java FileUtils.open方法的具体用法？Java FileUtils.open怎么用？Java FileUtils.open使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.h2.store.fs.FileUtils的用法示例。


在下文中一共展示了FileUtils.open方法的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: FileStore

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
/**
 * Create a new file using the given settings.
 *
 * @param handler the callback object
 * @param name the file name
 * @param mode the access mode ("r", "rw", "rws", "rwd")
 */
protected FileStore(DataHandler handler, String name, String mode) {
    this.handler = handler;
    this.name = name;
    try {
        boolean exists = FileUtils.exists(name);
        if (exists && !FileUtils.canWrite(name)) {
            mode = "r";
        } else {
            FileUtils.createDirectories(FileUtils.getParent(name));
        }
        file = FileUtils.open(name, mode);
        if (exists) {
            fileLength = file.size();
        }
    } catch (IOException e) {
        throw DbException.convertIOException(
                e, "name: " + name + " mode: " + mode);
    }
    this.mode = mode;
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:28，代码来源:FileStore.java

示例2: testIncompleteCreate

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testIncompleteCreate() throws Exception {
    deleteDb("pageStoreCoverage");
    Connection conn;
    String fileName = getBaseDir() + "/pageStore" + Constants.SUFFIX_PAGE_FILE;
    conn = getConnection("pageStoreCoverage");
    Statement stat = conn.createStatement();
    stat.execute("drop table if exists INFORMATION_SCHEMA.LOB_DATA");
    stat.execute("drop table if exists INFORMATION_SCHEMA.LOB_MAP");
    conn.close();
    FileChannel f = FileUtils.open(fileName, "rw");
    // create a new database
    conn = getConnection("pageStoreCoverage");
    conn.close();
    f = FileUtils.open(fileName, "rw");
    f.truncate(16);
    // create a new database
    conn = getConnection("pageStoreCoverage");
    conn.close();
    deleteDb("pageStoreCoverage");
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:21，代码来源:TestPageStoreCoverage.java

示例3: openFile

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
/**
 * Re-open the file. The file pointer will be reset to the previous
 * location.
 */
public void openFile() throws IOException {
    if (file == null) {
        file = FileUtils.open(name, mode);
        file.position(filePos);
    }
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:11，代码来源:FileStore.java

示例4: testCorrupt

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testCorrupt() throws Exception {
    if (config.mvStore) {
        // not needed for MV_STORE=TRUE
        return;
    }
    DeleteDbFiles.execute(getBaseDir(), "recovery", true);
    Connection conn = getConnection("recovery");
    Statement stat = conn.createStatement();
    stat.execute("create table test(id int, name varchar) as " +
            "select 1, 'Hello World1'");
    conn.close();
    FileChannel f = FileUtils.open(getBaseDir() + "/recovery.h2.db", "rw");
    byte[] buff = new byte[Constants.DEFAULT_PAGE_SIZE];
    while (f.position() < f.size()) {
        FileUtils.readFully(f, ByteBuffer.wrap(buff));
        if (new String(buff).contains("Hello World1")) {
            buff[buff.length - 1]++;
            f.position(f.position() - buff.length);
            f.write(ByteBuffer.wrap(buff));
        }
    }
    f.close();
    Recover.main("-dir", getBaseDir(), "-db", "recovery");
    String script = IOUtils.readStringAndClose(
            new InputStreamReader(
            FileUtils.newInputStream(getBaseDir() + "/recovery.h2.sql")), -1);
    assertContains(script, "checksum mismatch");
    assertContains(script, "dump:");
    assertContains(script, "Hello World2");
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:31，代码来源:TestRecovery.java

示例5: testSimpleExpandTruncateSize

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testSimpleExpandTruncateSize() throws Exception {
    String f = "memFS:" + getBaseDir() + "/fs/test.data";
    FileUtils.createDirectories("memFS:" + getBaseDir() + "/fs");
    FileChannel c = FileUtils.open(f, "rw");
    c.position(4000);
    c.write(ByteBuffer.wrap(new byte[1]));
    FileLock lock = c.tryLock();
    c.truncate(0);
    if (lock != null) {
        lock.release();
    }
    c.close();
    FileUtils.deleteRecursive("memFS:", false);
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:15，代码来源:TestFileSystem.java

示例6: testReadOnly

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testReadOnly(final String f) throws IOException {
    new AssertThrows(IOException.class) {
        @Override
        public void test() throws IOException {
            FileUtils.newOutputStream(f, false);
    }};
    new AssertThrows(DbException.class) {
        @Override
        public void test() {
            FileUtils.move(f, f);
    }};
    new AssertThrows(DbException.class) {
        @Override
        public void test() {
            FileUtils.move(f, f);
    }};
    new AssertThrows(IOException.class) {
        @Override
        public void test() throws IOException {
            FileUtils.createTempFile(f, ".tmp", false, false);
    }};
    final FileChannel channel = FileUtils.open(f, "r");
    new AssertThrows(IOException.class) {
        @Override
        public void test() throws IOException {
            channel.write(ByteBuffer.allocate(1));
    }};
    new AssertThrows(IOException.class) {
        @Override
        public void test() throws IOException {
            channel.truncate(0);
    }};
    assertTrue(null == channel.tryLock());
    channel.force(false);
    channel.close();
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:37，代码来源:TestFileSystem.java

示例7: testErrorMessageWrongSplit

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testErrorMessageWrongSplit() throws Exception {
    if (config.memory || config.reopen) {
        return;
    }
    String fn = getBaseDir() + "/openClose2";
    if (config.mvStore) {
        fn += Constants.SUFFIX_MV_FILE;
    } else {
        fn += Constants.SUFFIX_PAGE_FILE;
    }
    FileUtils.delete("split:" + fn);
    Connection conn;
    String url = "jdbc:h2:split:18:" + getBaseDir() + "/openClose2";
    url = getURL(url, true);
    conn = DriverManager.getConnection(url);
    conn.createStatement().execute("create table test(id int, name varchar) " +
            "as select 1, space(1000000)");
    conn.close();
    FileChannel c = FileUtils.open(fn+".1.part", "rw");
    c.position(c.size() * 2 - 1);
    c.write(ByteBuffer.wrap(new byte[1]));
    c.close();
    if (config.mvStore) {
        assertThrows(ErrorCode.IO_EXCEPTION_1, this).getConnection(url);
    } else {
        assertThrows(ErrorCode.IO_EXCEPTION_2, this).getConnection(url);
    }
    FileUtils.delete("split:" + fn);
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:30，代码来源:TestOpenClose.java

示例8: testUnsupportedFeatures

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private static void testUnsupportedFeatures(String fsBase) throws IOException {
    final String fileName = fsBase + "/testFile";
    if (FileUtils.exists(fileName)) {
        FileUtils.delete(fileName);
    }
    if (FileUtils.createFile(fileName)) {
        final FileChannel channel = FileUtils.open(fileName, "rw");
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.map(MapMode.PRIVATE, 0, channel.size());
        }};
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.read(new ByteBuffer[]{ByteBuffer.allocate(10)}, 0, 0);
        }};
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.write(new ByteBuffer[]{ByteBuffer.allocate(10)}, 0, 0);
        }};
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.transferFrom(channel, 0, 0);
        }};
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.transferTo(0, 0, channel);
        }};
        new AssertThrows(UnsupportedOperationException.class) {
            @Override
            public void test() throws IOException {
                channel.lock();
        }};
        channel.close();
        FileUtils.delete(fileName);
    }
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:42，代码来源:TestFileSystem.java

示例9: testAppendOnly

import org.h2.store.fs.FileUtils; //导入方法依赖的package包/类
private void testAppendOnly() throws Exception {
    deleteDb("testAppendOnly");
    Connection conn = getConnection(
            "testAppendOnly");
    Statement stat = conn.createStatement();
    stat.execute("set retention_time 0");
    for (int i = 0; i < 10; i++) {
        stat.execute("create table dummy" + i +
                " as select x, space(100) from system_range(1, 1000)");
        stat.execute("checkpoint");
    }
    stat.execute("create table test as select x from system_range(1, 1000)");
    conn.close();
    String fileName = getBaseDir() + "/testAppendOnly" + Constants.SUFFIX_MV_FILE;
    long fileSize = FileUtils.size(fileName);

    conn = getConnection(
            "testAppendOnly;reuse_space=false");
    stat = conn.createStatement();
    stat.execute("set retention_time 0");
    for (int i = 0; i < 10; i++) {
        stat.execute("drop table dummy" + i);
        stat.execute("checkpoint");
    }
    stat.execute("alter table test alter column x rename to y");
    stat.execute("select y from test where 1 = 0");
    stat.execute("create table test2 as select x from system_range(1, 1000)");
    conn.close();

    FileChannel fc = FileUtils.open(fileName, "rw");
    // undo all changes
    fc.truncate(fileSize);

    conn = getConnection(
            "testAppendOnly");
    stat = conn.createStatement();
    stat.execute("select * from dummy0 where 1 = 0");
    stat.execute("select * from dummy9 where 1 = 0");
    stat.execute("select x from test where 1 = 0");
    conn.close();
}
开发者ID:vdr007，项目名称:ThriftyPaxos，代码行数:42，代码来源:TestMVTableEngine.java


注：本文中的org.h2.store.fs.FileUtils.open方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。