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Streaming API for EDI for Java
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/*******************************************************************************
 * Copyright 2017 xlate.io LLC, http://www.xlate.io
 *
 * Licensed 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 io.xlate.edi.schema;

import java.io.InputStream;
import java.net.URL;

@SuppressWarnings("java:S1214") // Allow constant string value to be used in this interface
public interface SchemaFactory {

    /**
     * Property key for a URL (java.lang.String or
     * java.net.URL) to be used with relative file URLs in
     * <include schemaLocation="..."> element/attributes
     * processed by a SchemaFactory. Besides a java.net.URL, any class with a
     * toString method that returns a valid URL-formated String may be used as
     * the value for this property.
     *
     * @since 1.8
     */
    public static final String SCHEMA_LOCATION_URL_CONTEXT = "io.xlate.edi.schema.SCHEMA_LOCATION_URL_CONTEXT";

    /**
     * Create a new instance of the factory. This static method creates a new
     * factory instance.
     *
     * Once an application has obtained a reference to an EDIOutputFactory it
     * can use the factory to configure and obtain stream instances.
     *
     * @return the factory implementation
     */
    public static SchemaFactory newFactory() {
        return new io.xlate.edi.internal.schema.StaEDISchemaFactory();
    }

    public abstract Schema createSchema(URL location) throws EDISchemaException;

    public abstract Schema createSchema(InputStream stream) throws EDISchemaException;

    /**
     * Retrieve the control schema for the provided standard and version. This
     * method loads an internal, immutable schema provided by StAEDI.
     *
     * @param standard
     *            the standard, e.g. X12 or EDIFACT
     * @param version
     *            the version of the standard
     * @return the control schema corresponding to the standard and version
     * @throws EDISchemaException
     *             when the schema can not be loaded.
     *
     * @since 1.5
     */
    public Schema getControlSchema(String standard, String[] version) throws EDISchemaException;

    /**
     * Query the set of properties that this factory supports.
     *
     * @param name
     *            - The name of the property (may not be null)
     * @return true if the property is supported and false otherwise
     */
    public abstract boolean isPropertySupported(String name);

    /**
     * Get the value of a feature/property from the underlying implementation
     *
     * @param name
     *            - The name of the property (may not be null)
     * @return The value of the property
     * @throws IllegalArgumentException
     *             if the property is not supported
     */
    public abstract Object getProperty(String name);

    /**
     * Allows the user to set specific feature/property on the underlying
     * implementation. The underlying implementation is not required to support
     * every setting of every property in the specification and may use
     * IllegalArgumentException to signal that an unsupported property may not
     * be set with the specified value.
     *
     * @param name
     *            - The name of the property (may not be null)
     * @param value
     *            - The value of the property
     * @throws IllegalArgumentException
     *             if the property is not supported
     */
    public abstract void setProperty(String name, Object value);
}