| /* |
| * Copyright (c) 2011, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation |
| // |
| package org.eclipse.persistence.jpa.jpql.tools.model.query; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import org.eclipse.persistence.jpa.jpql.parser.BetweenExpression; |
| import org.eclipse.persistence.jpa.jpql.parser.InternalBetweenExpressionBNF; |
| import static org.eclipse.persistence.jpa.jpql.parser.AbstractExpression.*; |
| |
| /** |
| * Used in conditional expression to determine whether the result of an expression falls within an |
| * inclusive range of values. Numeric, string and date expression can be evaluated in this way. |
| * |
| * <div><b>BNF:</b> <code>between_expression ::= arithmetic_expression [NOT] BETWEEN arithmetic_expression AND arithmetic_expression |<br> |
| * string_expression [NOT] BETWEEN string_expression AND string_expression |<br> |
| * datetime_expression [NOT] BETWEEN datetime_expression AND datetime_expression</code></div><p> |
| * |
| * @see BetweenExpression |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| @SuppressWarnings({"nls", "unused"}) // unused used for the import statement: see bug 330740 |
| public class BetweenExpressionStateObject extends AbstractStateObject { |
| |
| /** |
| * The {@link StateObject} representing the lower bound expression. |
| */ |
| private StateObject lowerBoundStateObject; |
| |
| /** |
| * Determines whether the <code><b>NOT</b></code> identifier is part of the expression or not. |
| */ |
| private boolean not; |
| |
| /** |
| * The {@link StateObject} representing the expression to determine if its result falls within |
| * the lower and upper bounds. |
| */ |
| private StateObject stateObject; |
| |
| /** |
| * The {@link StateObject} representing the upper bound expression. |
| */ |
| private StateObject upperBoundStateObject; |
| |
| /** |
| * Notifies the {@link StateObject} representing the lower bound expression has changed. |
| */ |
| public static final String LOWER_STATE_OBJECT_PROPERTY = "lowerBoundStateObject"; |
| |
| /** |
| * Notifies the visibility of the <code><b>NOT</b></code> identifier has changed. |
| */ |
| public static final String NOT_PROPERTY = "not"; |
| |
| /** |
| * Notifies the state object property has changed. |
| */ |
| public static final String STATE_OBJECT_PROPERTY = "stateObject"; |
| |
| /** |
| * Notifies the {@link StateObject} representing the upper bound expression has changed. |
| */ |
| public static final String UPPER_STATE_OBJECT_PROPERTY = "upperBoundStateObject"; |
| |
| /** |
| * Creates a new <code>BetweenExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public BetweenExpressionStateObject(StateObject parent) { |
| super(parent); |
| } |
| |
| /** |
| * Creates a new <code>BetweenExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param stateObject The {@link StateObject} representing the expression to compare its result |
| * to the lower and upper bounds |
| * @param not Determines whether the <code><b>NOT</b></code> identifier is part of the expression |
| * or not |
| * @param lowerBound The {@link StateObject} representing the lower bound expression |
| * @param upperBound The {@link StateObject} representing the upper bound expression |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public BetweenExpressionStateObject(StateObject parent, |
| StateObject stateObject, |
| boolean not, |
| StateObject lowerBound, |
| StateObject upperBound) { |
| |
| super(parent); |
| this.not = not; |
| this.stateObject = parent(stateObject); |
| this.lowerBoundStateObject = parent(lowerBound); |
| this.upperBoundStateObject = parent(upperBound); |
| } |
| |
| /** |
| * Creates a new <code>BetweenExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param stateObject The {@link StateObject} representing the expression to compare its result |
| * to the lower and upper bounds |
| * @param lowerBound The {@link StateObject} representing the lower bound expression |
| * @param upperBound The {@link StateObject} representing the upper bound expression |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public BetweenExpressionStateObject(StateObject parent, |
| StateObject stateObject, |
| StateObject lowerBound, |
| StateObject upperBound) { |
| |
| this(parent, stateObject, false, lowerBound, upperBound); |
| } |
| |
| /** |
| * Creates a new <code>BetweenExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param jpqlFragment The JPQL fragment representing the expression to compare its result to the |
| * lower and upper bounds, the fragment will be parsed and converted into a {@link StateObject} |
| * @param not Determines whether the <code><b>NOT</b></code> identifier is part of the expression |
| * or not |
| * @param lowerBoundJpqlFragment The JPQL fragment representing the lower bound of the range, the |
| * fragment will be parsed and converted into a {@link StateObject} |
| * @param upperBoundJpqlFragment The JPQL fragment representing the upper bound of the range, the |
| * fragment will be parsed and converted into a {@link StateObject} |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public BetweenExpressionStateObject(StateObject parent, |
| String jpqlFragment, |
| boolean not, |
| String lowerBoundJpqlFragment, |
| String upperBoundJpqlFragment) { |
| |
| super(parent); |
| this.not = not; |
| parse(jpqlFragment); |
| parseLowerBound(lowerBoundJpqlFragment); |
| parseUpperBound(upperBoundJpqlFragment); |
| } |
| |
| /** |
| * Creates a new <code>BetweenExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param jpqlFragment The JPQL fragment representing the expression to compare its result to the |
| * lower and upper bounds, the fragment will be parsed and converted into a {@link StateObject} |
| * @param lowerBoundJpqlFragment The JPQL fragment representing the lowe bound of the range, the |
| * fragment will be parsed and converted into a {@link StateObject} |
| * @param upperBoundJpqlFragment The JPQL fragment representing the upper bound of the range, the |
| * fragment will be parsed and converted into a {@link StateObject} |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public BetweenExpressionStateObject(StateObject parent, |
| String jpqlFragment, |
| String lowerBoundJpqlFragment, |
| String upperBoundJpqlFragment) { |
| |
| this(parent, jpqlFragment, false, lowerBoundJpqlFragment, upperBoundJpqlFragment); |
| } |
| |
| @Override |
| public void accept(StateObjectVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| protected void addChildren(List<StateObject> children) { |
| super.addChildren(children); |
| if (stateObject != null) { |
| children.add(stateObject); |
| } |
| if (lowerBoundStateObject != null) { |
| children.add(lowerBoundStateObject); |
| } |
| if (upperBoundStateObject != null) { |
| children.add(upperBoundStateObject); |
| } |
| } |
| |
| /** |
| * Makes sure the <code><b>NOT</b></code> identifier is specified. |
| * |
| * @return This object |
| */ |
| public BetweenExpressionStateObject addNot() { |
| if (!not) { |
| setNot(true); |
| } |
| return this; |
| } |
| |
| @Override |
| public BetweenExpression getExpression() { |
| return (BetweenExpression) super.getExpression(); |
| } |
| |
| /** |
| * Returns the {@link StateObject} representing the lower bound of the range. |
| * |
| * @return The expression representing the lower bound |
| */ |
| public StateObject getLowerBound() { |
| return lowerBoundStateObject; |
| } |
| |
| /** |
| * Returns the {@link StateObject} representing the expression to determine if its result falls |
| * within the lower and upper bounds. |
| * |
| * @return The expression to check if its result is in the range of the lower and upper bounds |
| */ |
| public StateObject getStateObject() { |
| return stateObject; |
| } |
| |
| /** |
| * Returns the {@link StateObject} representing the upper bound of the range. |
| * |
| * @return The expression representing the upper bound |
| */ |
| public StateObject getUpperBound() { |
| return upperBoundStateObject; |
| } |
| |
| /** |
| * Determines whether the {@link StateObject} representing the lower bound is defined or not. |
| * |
| * @return <code>true</code> if the {@link StateObject} representing the expression to check if |
| * its result falls into a range has been defined; <code>false</code> otherwise |
| */ |
| public boolean hasLowerBound() { |
| return lowerBoundStateObject != null; |
| } |
| |
| /** |
| * Determines whether the <code><b>NOT</b></code> identifier is used or not. |
| * |
| * @return <code>true</code> if the <code><b>NOT</b></code> identifier is part of the expression; |
| * <code>false</code> otherwise |
| */ |
| public boolean hasNot() { |
| return not; |
| } |
| |
| /** |
| * Determines whether the {@link StateObject} representing the expression to determine if its |
| * result falls within the lower and upper bounds has been defined or not. |
| * |
| * @return <code>true</code> if the {@link StateObject} representing the lower bound expression |
| * has been defined; <code>false</code> otherwise |
| */ |
| public boolean hasStateObject() { |
| return stateObject != null; |
| } |
| |
| /** |
| * Determines whether the {@link StateObject} representing the upper bound is defined or not. |
| * |
| * @return <code>true</code> if the {@link StateObject} representing the upper bound expression |
| * has been defined; <code>false</code> otherwise |
| */ |
| public boolean hasUpperBound() { |
| return upperBoundStateObject != null; |
| } |
| |
| @Override |
| public boolean isEquivalent(StateObject stateObject) { |
| |
| if (super.isEquivalent(stateObject)) { |
| BetweenExpressionStateObject between = (BetweenExpressionStateObject) stateObject; |
| return not == between.not && |
| areEquivalent(stateObject, between.stateObject) && |
| areEquivalent(lowerBoundStateObject, between.lowerBoundStateObject) && |
| areEquivalent(upperBoundStateObject, between.upperBoundStateObject); |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Parses the given JPQL fragment, which will represent the expression to compare its result to |
| * the lower and upper bounds. |
| * |
| * @param jpqlFragment The JPQL fragment representing the expression to compare its result to the |
| * lower and upper bounds, the fragment will be parsed and converted into a {@link StateObject} |
| */ |
| public void parse(String jpqlFragment) { |
| StateObject stateObject = buildStateObject(jpqlFragment, InternalBetweenExpressionBNF.ID); |
| setStateObject(stateObject); |
| } |
| |
| /** |
| * Parses the given JPQL fragment, which will represent the lower bound of the range. |
| * |
| * @param jpqlFragment The JPQL fragment representing the lower bound of the range, the fragment |
| * will be parsed and converted into a {@link StateObject} |
| */ |
| public void parseLowerBound(String jpqlFragment) { |
| StateObject stateObject = buildStateObject(jpqlFragment, InternalBetweenExpressionBNF.ID); |
| setLowerBound(stateObject); |
| } |
| |
| /** |
| * Parses the given JPQL fragment, which will represent the upper bound of the range. |
| * |
| * @param jpqlFragment The JPQL fragment representing the upper bound of the range, the fragment |
| * will be parsed and converted into a {@link StateObject} |
| */ |
| public void parseUpperBound(String jpqlFragment) { |
| StateObject stateObject = buildStateObject(jpqlFragment, InternalBetweenExpressionBNF.ID); |
| setUpperBound(stateObject); |
| } |
| |
| /** |
| * Makes sure the <code><b>NOT</b></code> identifier is not specified. |
| */ |
| public void removeNot() { |
| if (not) { |
| setNot(false); |
| } |
| } |
| |
| /** |
| * Keeps a reference of the {@link BetweenExpression parsed object} object, which should only be |
| * done when this object is instantiated during the conversion of a parsed JPQL query into |
| * {@link StateObject StateObjects}. |
| * |
| * @param expression The {@link BetweenExpression parsed object} representing a <code><b>BETWEEN</b></code> |
| * expression |
| */ |
| public void setExpression(BetweenExpression expression) { |
| super.setExpression(expression); |
| } |
| |
| /** |
| * Sets the {@link StateObject} representing the lower bound of the range. |
| * |
| * @param lowerBound The {@link StateObject} representing the lower bound expression |
| */ |
| public void setLowerBound(StateObject lowerBound) { |
| StateObject oldLowerBoundStateObject = lowerBoundStateObject; |
| lowerBoundStateObject = parent(lowerBound); |
| firePropertyChanged(LOWER_STATE_OBJECT_PROPERTY, oldLowerBoundStateObject, lowerBoundStateObject); |
| } |
| |
| /** |
| * Sets whether the <code><b>NOT</b></code> identifier should be part of the expression or not. |
| * |
| * @param not <code>true</code> if the <code><b>NOT</b></code> identifier should be part of the |
| * expression; <code>false</code> otherwise |
| */ |
| public void setNot(boolean not) { |
| boolean oldNot = this.not; |
| this.not = not; |
| firePropertyChanged(NOT_PROPERTY, oldNot, not); |
| } |
| |
| /** |
| * Sets the {@link StateObject} representing the expression to determine if its result falls |
| * within the lower and upper bounds. |
| * |
| * @param stateObject The expression to check if its result is in the range of the lower and |
| * upper bounds |
| */ |
| public void setStateObject(StateObject stateObject) { |
| StateObject oldStateObject = this.stateObject; |
| this.stateObject = parent(stateObject); |
| firePropertyChanged(STATE_OBJECT_PROPERTY, oldStateObject, stateObject); |
| } |
| |
| /** |
| * Sets the {@link StateObject} representing the upper bound of the range. |
| * |
| * @param upperBound The {@link StateObject} representing the upper bound expression |
| */ |
| public void setUpperBound(StateObject upperBound) { |
| StateObject oldUpperBoundStateObject = upperBoundStateObject; |
| upperBoundStateObject = parent(upperBound); |
| firePropertyChanged(UPPER_STATE_OBJECT_PROPERTY, oldUpperBoundStateObject, upperBoundStateObject); |
| } |
| |
| /** |
| * Changes the visibility state of the <code><b>NOT</b></code> identifier. |
| */ |
| public void toggleNot() { |
| setNot(!not); |
| } |
| |
| @Override |
| protected void toTextInternal(Appendable writer) throws IOException { |
| |
| if (stateObject != null) { |
| stateObject.toString(writer); |
| writer.append(SPACE); |
| } |
| |
| writer.append(not ? NOT_BETWEEN : BETWEEN); |
| |
| if (lowerBoundStateObject != null) { |
| writer.append(SPACE); |
| lowerBoundStateObject.toString(writer); |
| } |
| |
| writer.append(SPACE); |
| writer.append(AND); |
| |
| if (upperBoundStateObject != null) { |
| writer.append(SPACE); |
| upperBoundStateObject.toString(writer); |
| } |
| } |
| } |