Examples with FrontendException org.apache.pig.impl.logicalLayer.FrontendException used on opensource projects

Example 6 with FrontendException

use of org.apache.pig.impl.logicalLayer.FrontendException in project sketches-pig by DataSketches.

the class Union method outputSchema.

@Override
public Schema outputSchema(final Schema input) {
    if (input != null) {
        try {
            final Schema tupleSchema = new Schema();
            tupleSchema.add(new Schema.FieldSchema("Sketch", DataType.BYTEARRAY));
            return new Schema(new Schema.FieldSchema(getSchemaName(this.getClass().getName().toLowerCase(), input), tupleSchema, DataType.TUPLE));
        } catch (final FrontendException e) {
        // fall through
        }
    }
    return null;
}

Example 7 with FrontendException

use of org.apache.pig.impl.logicalLayer.FrontendException in project sketches-pig by DataSketches.

the class UnionDoublesSketch method outputSchema.

@Override
public Schema outputSchema(final Schema input) {
    if (input == null) {
        return null;
    }
    try {
        final Schema tupleSchema = new Schema();
        tupleSchema.add(new Schema.FieldSchema("Sketch", DataType.BYTEARRAY));
        return new Schema(new Schema.FieldSchema(getSchemaName(this.getClass().getName().toLowerCase(), input), tupleSchema, DataType.TUPLE));
    } catch (final FrontendException e) {
        throw new RuntimeException(e);
    }
}

Example 8 with FrontendException

use of org.apache.pig.impl.logicalLayer.FrontendException in project sketches-pig by DataSketches.

the class UnionItemsSketch method outputSchema.

@Override
public Schema outputSchema(final Schema input) {
    if (input == null) {
        return null;
    }
    try {
        final Schema tupleSchema = new Schema();
        tupleSchema.add(new Schema.FieldSchema("Sketch", DataType.BYTEARRAY));
        return new Schema(new Schema.FieldSchema(getSchemaName(this.getClass().getName().toLowerCase(), input), tupleSchema, DataType.TUPLE));
    } catch (final FrontendException e) {
        throw new RuntimeException(e);
    }
}

Example 9 with FrontendException

use of org.apache.pig.impl.logicalLayer.FrontendException in project sketches-pig by DataSketches.

the class DataToVarOptSketch method outputSchema.

@Override
public Schema outputSchema(final Schema input) {
    try {
        if (input == null || input.size() == 0) {
            throw new IllegalArgumentException("Degenerate input schema to VarOptSampling");
        }
        // first element must be a bag
        if (input.getField(0).type != DataType.BAG) {
            throw new IllegalArgumentException("VarOpt input must be a data bag: " + input.toString());
        }
        // record has a tuple in field 0
        final Schema record = input.getField(0).schema;
        final Schema fields = record.getField(0).schema;
        if (fields.getField(weightIdx_).type != DataType.DOUBLE && fields.getField(weightIdx_).type != DataType.FLOAT) {
            throw new IllegalArgumentException("weightIndex item of VarOpt tuple must be a " + "weight (double/float), found " + fields.getField(0).type + ": " + fields.toString());
        }
        return new Schema(new Schema.FieldSchema(getSchemaName(this.getClass().getName().toLowerCase(), input), DataType.BYTEARRAY));
    } catch (final FrontendException e) {
        throw new RuntimeException(e);
    }
}

Example 10 with FrontendException

use of org.apache.pig.impl.logicalLayer.FrontendException in project sketches-pig by DataSketches.

the class GetVarOptSamples method outputSchema.

@Override
public Schema outputSchema(final Schema input) {
    try {
        if (input == null || input.size() == 0 || input.getField(0).type != DataType.BYTEARRAY) {
            throw new IllegalArgumentException("Input to GetVarOptSamples must be a DataByteArray: " + (input == null ? "null" : input.toString()));
        }
        final Schema weightedSampleSchema = new Schema();
        weightedSampleSchema.add(new Schema.FieldSchema(WEIGHT_ALIAS, DataType.DOUBLE));
        weightedSampleSchema.add(new Schema.FieldSchema(RECORD_ALIAS, DataType.TUPLE));
        return new Schema(new Schema.FieldSchema(getSchemaName(this.getClass().getName().toLowerCase(), input), weightedSampleSchema, DataType.BAG));
    } catch (final FrontendException e) {
        throw new RuntimeException(e);
    }
}