org.apache.parquet.tools.read.SimpleRecord.java Source code

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Here is the source code for org.apache.parquet.tools.read.SimpleRecord.java

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/* 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.parquet.tools.read;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import com.google.common.base.Strings;
import com.google.common.collect.Maps;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.node.BinaryNode;

public class SimpleRecord {
    protected final List<NameValue> values;

    public SimpleRecord() {
        this.values = new ArrayList<NameValue>();
    }

    public void add(String name, Object value) {
        values.add(new NameValue(name, value));
    }

    public List<NameValue> getValues() {
        return Collections.unmodifiableList(values);
    }

    public String toString() {
        return values.toString();
    }

    public void prettyPrint() {
        prettyPrint(new PrintWriter(System.out, true));
    }

    public void prettyPrint(PrintWriter out) {
        prettyPrint(out, 0);
    }

    public void prettyPrint(PrintWriter out, int depth) {
        for (NameValue value : values) {
            out.print(Strings.repeat(".", depth));

            out.print(value.getName());
            Object val = value.getValue();
            if (val == null) {
                out.print(" = ");
                out.print("<null>");
            } else if (byte[].class == val.getClass()) {
                out.print(" = ");
                out.print(new BinaryNode((byte[]) val).asText());
            } else if (short[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((short[]) val));
            } else if (int[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((int[]) val));
            } else if (long[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((long[]) val));
            } else if (float[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((float[]) val));
            } else if (double[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((double[]) val));
            } else if (boolean[].class == val.getClass()) {
                out.print(" = ");
                out.print(Arrays.toString((boolean[]) val));
            } else if (val.getClass().isArray()) {
                out.print(" = ");
                out.print(Arrays.deepToString((Object[]) val));
            } else if (SimpleRecord.class.isAssignableFrom(val.getClass())) {
                out.println(":");
                ((SimpleRecord) val).prettyPrint(out, depth + 1);
                continue;
            } else {
                out.print(" = ");
                out.print(String.valueOf(val));
            }

            out.println();
        }
    }

    public void prettyPrintJson(PrintWriter out) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        out.write(mapper.writeValueAsString(this.toJsonObject()));
    }

    protected Object toJsonObject() {
        Map<String, Object> result = Maps.newLinkedHashMap();
        for (NameValue value : values) {
            result.put(value.getName(), toJsonValue(value.getValue()));
        }

        return result;
    }

    protected static Object toJsonValue(Object val) {
        if (SimpleRecord.class.isAssignableFrom(val.getClass())) {
            return ((SimpleRecord) val).toJsonObject();
        } else if (byte[].class == val.getClass()) {
            return new BinaryNode((byte[]) val);
        } else {
            return val;
        }
    }

    public static final class NameValue {
        private final String name;
        private final Object value;

        public NameValue(String name, Object value) {
            this.name = name;
            this.value = value;
        }

        public String toString() {
            return name + ": " + value;
        }

        public String getName() {
            return name;
        }

        public Object getValue() {
            return value;
        }
    }
}