Examples of TScalar

Examples of com.foundationdb.server.types.TScalar

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        return Charset.forName(StringAttribute.charsetName(type));
    }

    public static final TScalar[] create(final TString stringType, final TClass longType, final TBinary binaryType) {

        TScalar hex_string = new TScalarBase()
        {
            @Override
            protected void buildInputSets(TInputSetBuilder builder) {
                builder.covers(stringType, 0);
            }

            @Override
            protected void doEvaluate(TExecutionContext context,
                                      LazyList<? extends ValueSource> inputs,
                                      ValueTarget output) {
                Charset charset = getCharset(context.inputTypeAt(0));
                String s = inputs.get(0).getString();
                byte[] bytes = s.getBytes(charset);
                output.putString(Strings.hex(bytes), null);
            }

            @Override
            public String displayName() {
                return HEX_NAME;
            }

            @Override
            public TOverloadResult resultType() {
                return TOverloadResult.custom(new TCustomOverloadResult() {
                    @Override
                    public TInstance resultInstance(List<TPreptimeValue> inputs, TPreptimeContext context) {
                        TInstance type = inputs.get(0).type();
                        int maxLen = type.attribute(StringAttribute.MAX_LENGTH);
                        Charset charset = getCharset(type);
                        long maxBytes = (long)Math.ceil(maxLen * charset.newEncoder().maxBytesPerChar());
                        long maxHexLength = maxBytes * 2;
                        return stringType.instance(Ints.saturatedCast(maxHexLength), anyContaminatingNulls(inputs));
                    }
                });
            }

        };

        TScalar hex_bigint = new TScalarBase()
        {
            @Override
            protected void buildInputSets(TInputSetBuilder builder) {
                builder.covers(longType, 0);
            }

            @Override
            protected void doEvaluate(TExecutionContext context,
                                      LazyList<? extends ValueSource> inputs,
                                      ValueTarget output) {
                long value = inputs.get(0).getInt64();
                output.putString(Long.toHexString(value).toUpperCase(), null);
            }

            @Override
            public String displayName() {
                return HEX_NAME;
            }

            @Override
            public TOverloadResult resultType() {
                return TOverloadResult.custom(new TCustomOverloadResult() {
                    @Override
                    public TInstance resultInstance(List<TPreptimeValue> inputs, TPreptimeContext context) {
                        // 16 = BIGINT size * 2
                        return stringType.instance(16, anyContaminatingNulls(inputs));
                    }
                });
            }
        };

        TScalar hex_binary = new TScalarBase()
        {
            @Override
            protected void buildInputSets(TInputSetBuilder builder) {
                builder.covers(binaryType, 0);
            }
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Examples of com.foundationdb.server.types.TScalar

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    private Base64() {
    }

    public static final TScalar[] create(final TString varchar, final TBinary varbinary) {

        TScalar binary_to_base64 = new TScalarBase()
        {
            @Override
            public String displayName() {
                return "TO_BASE64";
            }

            @Override
            protected void buildInputSets(TInputSetBuilder builder) {
                builder.covers(varbinary, 0);
            }

            @Override
            public TOverloadResult resultType() {
                return TOverloadResult.custom(new TCustomOverloadResult() {
                    @Override
                    public TInstance resultInstance(List<TPreptimeValue> inputs, TPreptimeContext context) {
                        TInstance inputType = inputs.get(0).type();
                        int binaryLength = inputType.attribute(TBinary.Attrs.LENGTH);
                        int base64Length = (binaryLength * 4 + 2) / 3; // round up for ='s
                        return varchar.instance(base64Length, inputType.nullability());
                    }       
                });
            }

            @Override
            protected void doEvaluate(TExecutionContext context,
                                      LazyList<? extends ValueSource> inputs,
                                      ValueTarget output) {
                byte[] binary = inputs.get(0).getBytes();
                output.putString(Strings.toBase64(binary), null);
            }
        };

        TScalar string_to_base64 = new TScalarBase()
        {
            @Override
            public String displayName() {
                return "TO_BASE64";
            }

            @Override
            protected void buildInputSets(TInputSetBuilder builder) {
                builder.covers(varchar, 0);
            }

            @Override
            public TOverloadResult resultType() {
                return TOverloadResult.custom(new TCustomOverloadResult() {
                    @Override
                    public TInstance resultInstance(List<TPreptimeValue> inputs, TPreptimeContext context) {
                        TInstance inputType = inputs.get(0).type();
                        int stringLength = inputType.attribute(StringAttribute.MAX_LENGTH);
                        int encodedLength = (int)Math.ceil(stringLength * Charset.forName(StringFactory.Charset.of(inputType.attribute(StringAttribute.CHARSET))).newEncoder().maxBytesPerChar());
                        int base64Length = (encodedLength * 4 + 2) / 3; // round up for ='s
                        return varchar.instance(base64Length, inputType.nullability());
                    }       
                });
            }

            @Override
            protected void doEvaluate(TExecutionContext context,
                                      LazyList<? extends ValueSource> inputs,
                                      ValueTarget output) {
                String charset = StringFactory.Charset.of(context.inputTypeAt(0).attribute(StringAttribute.CHARSET));
                String string = inputs.get(0).getString();
                try {
                    byte[] binary = string.getBytes(charset);
                    output.putString(Strings.toBase64(binary), null);
                }
                catch (UnsupportedEncodingException ex)
                {
                    context.warnClient(new InvalidParameterValueException("Unknown CHARSET: " + charset));
                    output.putNull();
                }
            }
        };

        TScalar from_base64 = new TScalarBase()
        {
            @Override
            public String displayName() {
                return "FROM_BASE64";
            }
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Examples of com.foundationdb.server.types.TScalar

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    static final double ln2 = Math.log(2);
   
    public static TScalar[] create(TClass argType)
    {
        LogType values[] = LogType.values();
        TScalar ret[] = new TScalar[values.length];
       
        for (int n = 0; n < ret.length; ++n)
            ret[n] = new TLog(values[n], argType);
        return ret;
    }
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Examples of com.foundationdb.server.types.TScalar

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public class MTimestampDiff extends TScalarBase
{
    public static TScalar[] create()
    {
        ArgType args[] = ArgType.values();
        TScalar ret[] = new TScalar[args.length * args.length + 1];
        int n = 0;
       
        for (ArgType arg1 : args)
            for (ArgType arg2 : args)
                ret[n++] = new MTimestampDiff(arg1, arg2)
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