Example usage for org.apache.hadoop.io Text set

Introduction

In this page you can find the example usage for org.apache.hadoop.io Text set.

Prototype

public void set(Text other)

Source Link

Document

copy a text.

Usage

From source file:com.facebook.presto.accumulo.io.AccumuloRecordCursor.java

License:Apache License

public AccumuloRecordCursor(AccumuloRowSerializer serializer, BatchScanner scanner, String rowIdName,
        List<AccumuloColumnHandle> columnHandles, List<AccumuloColumnConstraint> constraints) {
    this.columnHandles = requireNonNull(columnHandles, "columnHandles is null");
    this.scanner = requireNonNull(scanner, "scanner is null");
    this.serializer = requireNonNull(serializer, "serializer is null");
    this.serializer.setRowIdName(requireNonNull(rowIdName, "rowIdName is null"));

    requireNonNull(columnHandles, "columnHandles is null");
    requireNonNull(constraints, "constraints is null");

    if (retrieveOnlyRowIds(rowIdName)) {
        this.scanner.addScanIterator(new IteratorSetting(1, "firstentryiter", FirstEntryInRowIterator.class));

        fieldToColumnName = new String[1];
        fieldToColumnName[0] = rowIdName;

        // Set a flag on the serializer saying we are only going to be retrieving the row ID
        this.serializer.setRowOnly(true);
    } else {/*from  w w  w . j  a  v a  2  s.c o  m*/
        // Else, we will be scanning some more columns here
        this.serializer.setRowOnly(false);

        // Fetch the reserved row ID column
        this.scanner.fetchColumn(ROW_ID_COLUMN, ROW_ID_COLUMN);

        Text family = new Text();
        Text qualifier = new Text();

        // Create an array which maps the column ordinal to the name of the column
        fieldToColumnName = new String[columnHandles.size()];
        for (int i = 0; i < columnHandles.size(); ++i) {
            AccumuloColumnHandle columnHandle = columnHandles.get(i);
            fieldToColumnName[i] = columnHandle.getName();

            // Make sure to skip the row ID!
            if (!columnHandle.getName().equals(rowIdName)) {
                // Set the mapping of presto column name to the family/qualifier
                this.serializer.setMapping(columnHandle.getName(), columnHandle.getFamily().get(),
                        columnHandle.getQualifier().get());

                // Set our scanner to fetch this family/qualifier column
                // This will help us prune which data we receive from Accumulo
                family.set(columnHandle.getFamily().get());
                qualifier.set(columnHandle.getQualifier().get());
                this.scanner.fetchColumn(family, qualifier);
            }
        }
    }

    iterator = this.scanner.iterator();
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setArray(Text text, Type type, Block block) {
    text.set(encode(type, block));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setBoolean(Text text, Boolean value) {
    text.set(encode(BOOLEAN, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setByte(Text text, Byte value) {
    text.set(encode(TINYINT, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setDate(Text text, Date value) {
    text.set(encode(DATE, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setDouble(Text text, Double value) {
    text.set(encode(DOUBLE, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setFloat(Text text, Float value) {
    text.set(encode(REAL, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setInt(Text text, Integer value) {
    text.set(encode(INTEGER, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setLong(Text text, Long value) {
    text.set(encode(BIGINT, value));
}

From source file:com.facebook.presto.accumulo.serializers.LexicoderRowSerializer.java

License:Apache License

@Override
public void setMap(Text text, Type type, Block block) {
    text.set(encode(type, block));
}