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package org.apache.camel.impl; |
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import org.apache.camel.Exchange; |
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import org.apache.camel.Expression; |
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import org.apache.camel.Predicate; |
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import static org.apache.camel.util.ObjectHelper.notNull; |
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public abstract class BinaryPredicateSupport<E extends Exchange> implements Predicate<E> { |
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private final Expression<E> left; |
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private final Expression<E> right; |
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protected BinaryPredicateSupport(Expression<E> left, Expression<E> right) { |
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notNull(left, "left"); |
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notNull(right, "right"); |
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this.left = left; |
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this.right = right; |
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} |
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@Override |
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public String toString() { |
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return left + " " + getOperationText() + " " + right; |
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} |
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public boolean matches(E exchange) { |
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Object leftValue = left.evaluate(exchange); |
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Object rightValue = right.evaluate(exchange); |
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return matches(exchange, leftValue, rightValue); |
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} |
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public void assertMatches(String text, E exchange) { |
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Object leftValue = left.evaluate(exchange); |
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Object rightValue = right.evaluate(exchange); |
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if (!matches(exchange, leftValue, rightValue)) { |
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throw new AssertionError(text + assertionFailureMessage(exchange, leftValue, rightValue)); |
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} |
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} |
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protected abstract boolean matches(E exchange, Object leftValue, Object rightValue); |
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protected abstract String getOperationText(); |
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protected String assertionFailureMessage(E exchange, Object leftValue, Object rightValue) { |
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return this + " failed on " + exchange + " with left value <" + leftValue + "> right value <" |
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+ rightValue + ">"; |
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} |
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} |