private void dump(MetaData<?> meta) throws IOException { generator.writeStartObject(); for (Map.Entry<String,byte[]> e : meta.entrySet()) generator.writeStringField(e.getKey(), new String(e.getValue(), "ISO-8859-1")); generator.writeEndObject(); }
/** Return true iff a key has any value, false if it is not present. */ public boolean getBoolean(String key) { return get(key) != null; }
public static Checksum get(MetaData meta) { String name = meta.getChecksum(); if (name == null || "null".equals(name)) return new NullChecksum(); else if ("crc32".equals(name)) return new Crc32Checksum(); else throw new TrevniRuntimeException("Unknown checksum: "+name); }
T setReservedBoolean(String key, boolean value) { if (value) setReserved(key, ""); else remove(key); return (T)this; }
/** Set a metadata property to a binary value. */ public T set(String key, byte[] value) { if (isReserved(key)) { throw new TrevniRuntimeException("Cannot set reserved key: " + key); } put(key, value); return (T)this; }
/** Return the compression codec name. */ public String getCodec() { return getString(CODEC_KEY); }
static ColumnFileMetaData read(InputBuffer in) throws IOException { ColumnFileMetaData result = new ColumnFileMetaData(); MetaData.read(in, result); return result; }
T setReserved(String key, String value) { put(key, value.getBytes(UTF8)); return (T)this; }
/** Set a metadata property to a long value. */ public T set(String key, long value) { return set(key, Long.toString(value)); }
public static Codec get(MetaData meta) { String name = meta.getCodec(); if (name == null || "null".equals(name)) return new NullCodec(); else if ("deflate".equals(name)) return new DeflateCodec(); else if ("snappy".equals(name)) return new SnappyCodec(); else if ("bzip2".equals(name)) return new BZip2Codec(); else throw new TrevniRuntimeException("Unknown codec: "+name); }
T setReservedBoolean(String key, boolean value) { if (value) setReserved(key, ""); else remove(key); return (T)this; }
/** Set a metadata property to a binary value. */ public T set(String key, byte[] value) { if (isReserved(key)) { throw new TrevniRuntimeException("Cannot set reserved key: " + key); } put(key, value); return (T)this; }
/** Return the checksum algorithm name. */ public String getChecksum() { return getString(CHECKSUM_KEY); }
static ColumnMetaData read(InputBuffer in, ColumnFileReader file) throws IOException { ColumnMetaData result = new ColumnMetaData(); MetaData.read(in, result); result.name = result.getString(NAME_KEY); result.type = ValueType.forName(result.getString(TYPE_KEY)); result.values = result.getBoolean(VALUES_KEY); result.isArray = result.getBoolean(ARRAY_KEY); String parentName = result.getString(PARENT_KEY); if (parentName != null) result.setParent(file.getColumnMetaData(parentName)); return result; }
static void read(InputBuffer in, MetaData<?> metaData) throws IOException { int size = in.readInt(); for (int i = 0; i < size; i++) metaData.put(in.readString(), in.readBytes()); }
/** Set a metadata property to a String value. */ public T set(String key, String value) { return set(key, value.getBytes(UTF8)); }
public static Codec get(MetaData meta) { String name = meta.getCodec(); if (name == null || "null".equals(name)) return new NullCodec(); else if ("deflate".equals(name)) return new DeflateCodec(); else if ("snappy".equals(name)) return new SnappyCodec(); else throw new TrevniRuntimeException("Unknown codec: "+name); }
@Override public String toString() { StringBuilder builder = new StringBuilder(); builder.append('{').append(' '); for (Map.Entry<String,byte[]> e : entrySet()) { builder.append(e.getKey()); builder.append('='); builder.append(new String(e.getValue(), StandardCharsets.ISO_8859_1)); builder.append(' '); } builder.append('}'); return builder.toString(); }