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Module containing document schema description support.

There is a newer version: 3.6.8

/*
 * Copyright (C) the original author or authors.
 *
 * 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 net.conquiris.schema;

import static com.google.common.base.Preconditions.checkArgument;

/**
 * Base class for schema item implementations.
 * @author Andres Rodriguez
 */
abstract class AbstractSchemaItem extends AbstractWithFieldNameProperty implements SchemaItem {
	/** Minimum number of occurrences. */
	private final int minOccurs;
	/** Maximum number of occurrences. */
	private final int maxOccurs;

	/**
	 * Constructor.
	 * @param name Field name.
	 * @param minOccurs Minimum number of occurrences.
	 * @param maxOccurs Maximum number of occurrences.
	 */
	AbstractSchemaItem(String name, int minOccurs, int maxOccurs) {
		super(name);
		checkArgument(minOccurs >= 0, "The minimum number of occurrences of field %s must be >= 0", name);
		checkArgument(maxOccurs >= minOccurs, "The maximum number of occurrences of field %s must be >= minimum", name);
		this.minOccurs = minOccurs;
		this.maxOccurs = maxOccurs;
	}

	/*
	 * (non-Javadoc)
	 * @see net.conquiris.schema.SchemaItem#getMinOccurs()
	 */
	@Override
	public final int getMinOccurs() {
		return minOccurs;
	}

	/*
	 * (non-Javadoc)
	 * @see net.conquiris.schema.SchemaItem#getMaxOccurs()
	 */
	@Override
	public final int getMaxOccurs() {
		return maxOccurs;
	}

	/*
	 * (non-Javadoc)
	 * @see net.conquiris.schema.SchemaItem#isRequired()
	 */
	@Override
	public final boolean isRequired() {
		return minOccurs > 0;
	}

}