com.amazon.ion.impl._Private_IonWriterFactory Maven / Gradle / Ivy

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A Java implementation of the Amazon Ion data notation.
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/*
 * Copyright 2007-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file 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 com.amazon.ion.impl;

import com.amazon.ion.IonCatalog;
import com.amazon.ion.IonContainer;
import com.amazon.ion.IonSystem;
import com.amazon.ion.IonWriter;
import com.amazon.ion.SymbolTable;
import com.amazon.ion.system.IonWriterBuilder.InitialIvmHandling;

/**
 * NOT FOR APPLICATION USE!
 * 
 * This is the factory class for constructing writers with various capabilities.
 */
public final class _Private_IonWriterFactory
{
    /**
     * @param container must not be null.
     */
    public static IonWriter makeWriter(IonContainer container)
    {
        IonSystem sys = container.getSystem();
        IonCatalog cat = sys.getCatalog();
        IonWriter writer = makeWriter(cat, container);
        return writer;
    }

    /**
     * @param container must not be null.
     */
    public static IonWriter makeWriter(IonCatalog catalog,
                                       IonContainer container)
    {
        IonSystem sys = container.getSystem();
        SymbolTable defaultSystemSymtab = sys.getSystemSymbolTable();

        // TODO the SUPPRESS here is a nasty discontinuity with other places
        // that create this kind of reader.  It prevents the Lite DG system
        // iterator from returning two IVMs at the start of the data.
        // The Span tests detect that problem.
        IonWriterSystemTree system_writer =
            new IonWriterSystemTree(defaultSystemSymtab, catalog, container,
                                    InitialIvmHandling.SUPPRESS);

        return new IonWriterUser(catalog, sys, system_writer, true);
    }


    /**
     * @param container must not be null.
     */
    public static IonWriter makeSystemWriter(IonContainer container)
    {
        IonSystem sys = container.getSystem();
        IonCatalog cat = sys.getCatalog();
        SymbolTable defaultSystemSymtab = sys.getSystemSymbolTable();
        IonWriter writer =
            new IonWriterSystemTree(defaultSystemSymtab, cat, container,
                                    null /* initialIvmHandling */);
        return writer;
    }
}